| **Summary of Significant Accounting Policies (Details)**                                                                                                        | 12 Months Ended                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------|
||
| Ownership percentage of investments in companies below which the entity must exercise significant infuence in order to be accounted for under the equity method | 20.00%cfsc_EquityMethodInvestmentOwnershipPercentageSignificantInfluence                          |
| Ownership percentage of investments in companies below which the entity does not exercise significant influence and are accounted for under the cost method     | 20.00%cfsc_CostMethodInvestmentOwnershipPercentage                                                |
| Period after which collection of future income is considered as not probable                                                                                    | 120 days                                                                                          |
| Period after which unpaid installments are considered as past due                                                                                               | 30 days                                                                                           |
| Minimum                                                                                                                                                         |                                                                                              |
| Ownership percentage of investments in companies accounted for under the equity method                                                                          | 20.00%us-gaap_EquityMethodInvestmentOwnershipPercentage/ us-gaap_RangeAxis= us-gaap_MinimumMember |
| Maximum                                                                                                                                                         |                                                                                              |
| Ownership percentage of investments in companies accounted for under the equity method                                                                          | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage/ us-gaap_RangeAxis= us-gaap_MaximumMember |

| X                                                                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.
+ References
No definition available.
+ Details**Name:**cfsc_CostMethodInvestmentOwnershipPercentage**Namespace Prefix:**cfsc_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                                   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The ownership percentage of investments in companies below which the entity must exercise significant influence in order to be accounted for under the equity method.
+ References
No definition available.
+ Details**Name:**cfsc_EquityMethodInvestmentOwnershipPercentageSignificantInfluence**Namespace Prefix:**cfsc_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the period after which collection of future income is considered as not probable.
+ References
No definition available.
+ Details**Name:**cfsc_PeriodAfterWhichCollectionOfFutureIncomeIsConsideredAsNotProbable**Namespace Prefix:**cfsc_**Data Type:**xbrli:durationItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the period after which the unpaid contractual payments are considered as past due.
+ References
No definition available.
+ Details**Name:**cfsc_PeriodAfterWhichUnpaidInstallmentsAreConsideredAsPastDue**Namespace Prefix:**cfsc_**Data Type:**xbrli:durationItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571
+ Details**Name:**us-gaap_EquityMethodInvestmentOwnershipPercentage**Namespace Prefix:**us-gaap_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**instant |
| X                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_RangeAxis=us-gaap_MaximumMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_RangeAxis=us-gaap_MinimumMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |