| **Segment Information (Details) (USD $)In Millions, unless otherwise specified** | 3 Months Ended                                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                                                   |
|----------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
||
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | $ 689us-gaap_FinancialServicesRevenue                                                                                                                                                                                                                             | $ 711us-gaap_FinancialServicesRevenue                                                                                                                                                                                                                             |   |
| Segment Profit                                                                   | 187us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments                                                                                                                                            | 182us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments                                                                                                                                            |   |
| Interest Expense                                                                 | 151us-gaap_InterestExpense                                                                                                                                                                                                                                        | 162us-gaap_InterestExpense                                                                                                                                                                                                                                        |   |
| Depreciation on equipment leased to others                                       | 212us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease                                                                                                                                                                     | 214us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease                                                                                                                                                                     |   |
| Provision for credit losses                                                      | 18us-gaap_ProvisionForLoanLeaseAndOtherLosses                                                                                                                                                                                                                     | 37us-gaap_ProvisionForLoanLeaseAndOtherLosses                                                                                                                                                                                                                     |   |
| Segment Assets                                                                   | 34,341us-gaap_Assets                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              | 35,176us-gaap_Assets |
| Capital expenditures                                                             | 294cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions                                                                                                                                                                                      | 269cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions                                                                                                                                                                                      |   |
| Operating Segments                                                               |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 679us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                                                              | 697us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                                                              |   |
| Segment Profit                                                                   | 205us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                           | 192us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                           |   |
| Interest Expense                                                                 | 154us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                                                                       | 162us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                                                                       |   |
| Depreciation on equipment leased to others                                       | 212us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                    | 214us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                    |   |
| Provision for credit losses                                                      | 14us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                                                    | 36us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                                                    |   |
| Segment Assets                                                                   | 32,925us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                                                                             |                                                                                                                                                                                                                                                              | 33,866us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember |
| Capital expenditures                                                             | 293cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                     | 269cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember                                                                                                                     |   |
| Unallocated                                                                      |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 18us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                                                             | 21us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                                                             |   |
| Segment Profit                                                                   | (19)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                        | (13)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                        |   |
| Interest Expense                                                                 | 16us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                                                                      | 12us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                                                                      |   |
| Depreciation on equipment leased to others                                       | 0us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                    | 0us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                    |   |
| Provision for credit losses                                                      | 0us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                                                   | 0us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                                                   |   |
| Segment Assets                                                                   | 1,748us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                                                                            |                                                                                                                                                                                                                                                              | 1,648us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember |
| Capital expenditures                                                             | 0cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                     | 0cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_CorporateNonSegmentMember                                                                                                                     |   |
| Timing                                                                           |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | (8)us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                                                            | (7)us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                                                            |   |
| Segment Profit                                                                   | (11)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                        | (2)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                         |   |
| Interest Expense                                                                 | 0us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                                                                       | 0us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                                                                       |   |
| Depreciation on equipment leased to others                                       | 0us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                    | 0us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                    |   |
| Provision for credit losses                                                      | 4us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                                                   | 1us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                                                   |   |
| Segment Assets                                                                   | 103us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                                                                              |                                                                                                                                                                                                                                                              | 120us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember |
| Capital expenditures                                                             | 1cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                     | 0cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= cfsc_TimingMember                                                                                                                                     |   |
| Methodology                                                                      |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 0us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                                                         | 0us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                                                         |   |
| Segment Profit                                                                   | 12us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                     | 5us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                      |   |
| Interest Expense                                                                 | (19)us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                                                               | (12)us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                                                               |   |
| Depreciation on equipment leased to others                                       | 0us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                               | 0us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                               |   |
| Provision for credit losses                                                      | 0us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                                              | 0us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                                              |   |
| Segment Assets                                                                   | (221)us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                                                                       |                                                                                                                                                                                                                                                              | (215)us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember |
| Capital expenditures                                                             | 0cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                | 0cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= cfsc_MethodologyMember                                                                                                                                |   |
| Inter-segment Eliminations                                                       |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 0us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                                                          | 0us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                                                          |   |
| Segment Profit                                                                   | 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                       | 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                       |   |
| Interest Expense                                                                 | 0us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                                                                   | 0us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                                                                   |   |
| Depreciation on equipment leased to others                                       | 0us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                | 0us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                |   |
| Provision for credit losses                                                      | 0us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                                               | 0us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                                               |   |
| Segment Assets                                                                   | (214)us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                                                                        |                                                                                                                                                                                                                                                              | (243)us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember |
| Capital expenditures                                                             | 0cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                 | 0cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_IntersegmentEliminationMember                                                                                                                 |   |
| North America | Operating Segments                                               |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 284us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                                                           | 247us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                                                           |   |
| Segment Profit                                                                   | 97us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember         | 77us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember         |   |
| Interest Expense                                                                 | 63us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                                                                     | 60us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                                                                     |   |
| Depreciation on equipment leased to others                                       | 101us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                 | 80us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                  |   |
| Provision for credit losses                                                      | (4)us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                                                | 3us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                                                  |   |
| Segment Assets                                                                   | 13,818us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                                                                          |                                                                                                                                                                                                                                                              | 13,661us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember |
| Capital expenditures                                                             | 176cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                  | 130cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_NorthAmericaMember                                                  |   |
| Europe and CPF | Operating Segments                                              |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 113us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                                                              | 130us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                                                              |   |
| Segment Profit                                                                   | 35us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember            | 41us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember            |   |
| Interest Expense                                                                 | 17us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                                                                        | 24us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                                                                        |   |
| Depreciation on equipment leased to others                                       | 21us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                     | 26us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                     |   |
| Provision for credit losses                                                      | 13us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                                                    | 9us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                                                     |   |
| Segment Assets                                                                   | 7,327us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                                                                              |                                                                                                                                                                                                                                                              | 7,601us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember |
| Capital expenditures                                                             | 20cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                      | 31cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_EuropeAndCpfMember                                                      |   |
| Asia/Pacific | Operating Segments                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 80us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                                                             | 92us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                                                             |   |
| Segment Profit                                                                   | 20us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember          | 38us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember          |   |
| Interest Expense                                                                 | 31us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                                                                      | 28us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                                                                      |   |
| Depreciation on equipment leased to others                                       | 5us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                    | 6us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                    |   |
| Provision for credit losses                                                      | 9us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                                                   | 7us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                                                   |   |
| Segment Assets                                                                   | 4,586us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                                                                            |                                                                                                                                                                                                                                                              | 4,767us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember |
| Capital expenditures                                                             | 4cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                     | 10cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_AsiaPacificMember                                                    |   |
| Latin America | Operating Segments                                               |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 102us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                                                           | 105us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                                                           |   |
| Segment Profit                                                                   | 24us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember         | 26us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember         |   |
| Interest Expense                                                                 | 29us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                                                                     | 32us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                                                                     |   |
| Depreciation on equipment leased to others                                       | 27us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                  | 27us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                  |   |
| Provision for credit losses                                                      | 6us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                                                  | 4us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                                                  |   |
| Segment Assets                                                                   | 4,181us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                                                                           |                                                                                                                                                                                                                                                              | 4,676us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember |
| Capital expenditures                                                             | 24cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                   | 35cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_LatinAmericaMember                                                   |   |
| Mining | Operating Segments                                                      |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| **Segment Reporting Information**                                                |                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                              |   |
| Revenues                                                                         | 100us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                                                                   | 123us-gaap_FinancialServicesRevenue/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                                                                   |   |
| Segment Profit                                                                   | 29us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember | 10us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember |   |
| Interest Expense                                                                 | 14us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                                                                             | 18us-gaap_InterestExpense/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                                                                             |   |
| Depreciation on equipment leased to others                                       | 58us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                          | 75us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                          |   |
| Provision for credit losses                                                      | (10)us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                                                       | 13us-gaap_ProvisionForLoanLeaseAndOtherLosses/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                                                         |   |
| Segment Assets                                                                   | 3,013us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                                                                                   |                                                                                                                                                                                                                                                              | 3,161us-gaap_Assets/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember |
| Capital expenditures                                                             | $ 69cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                         | $ 63cfsc_ExpendituresForEquipmentOnOperatingLeasesAndForNonLeasedTransactions/ us-gaap_ConsolidationItemsAxis= us-gaap_OperatingSegmentsMember/ us-gaap_StatementBusinessSegmentsAxis= cfsc_MiningReportableSegmentMember                                         |   |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow for purchases on long lived, depreciable tangible personal property, nonconsumable in nature, with finite lives used to generate rental income and the cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.
+ References
No definition available.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate financial services revenue and operating interest income earned during the reporting period.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of the cost of borrowed funds accounted for as interest expense.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The total depreciation charge recorded for property subject to or held for lease.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.
+ References
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