| **Financing Activities (Tables)**                                                                  | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               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| **Receivables [Abstract]**                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            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| Impaired loans and finance leases                                                                  | Individually impaired loans and finance leases for the Customer portfolio segment were as follows:(Millions of dollars)            As of June 30, 2014 As of December 31, 2013Impaired Loans and Finance Leases WithNo Allowance RecordedRecordedInvestment UnpaidPrincipalBalance RelatedAllowance RecordedInvestment UnpaidPrincipalBalance RelatedAllowanceCustomer           North America$20 $20 $— $23 $22 $—Europe46 46 — 48 47 —Asia/Pacific1 1 — 7 7 —Mining42 42 — 134 134 —Latin America38 38 — 11 11 —Caterpillar Power Finance150 149 — 223 222 —Total$297 $296 $— $446 $443 $—Impaired Loans and Finance Leases WithAn Allowance Recorded           Customer           North America$15 $15 $7 $13 $13 $4Europe14 14 5 20 19 7Asia/Pacific17 17 4 17 17 2Mining114 114 11 — — —Latin America10 10 3 23 23 6Caterpillar Power Finance89 88 24 110 106 51Total$259 $258 $54 $183 $178 $70Total Impaired Loans and Finance Leases           Customer           North America$35 $35 $7 $36 $35 $4Europe60 60 5 68 66 7Asia/Pacific18 18 4 24 24 2Mining156 156 11 134 134 —Latin America48 48 3 34 34 6Caterpillar Power Finance239 237 24 333 328 51Total$556 $554 $54 $629 $621 $70             (Millions of dollars)        Three Months EndedJune 30, 2014 Three Months EndedJune 30, 2013Impaired Loans and Finance Leases With No AllowanceRecordedAverageRecordedInvestment InterestIncomeRecognized AverageRecordedInvestment InterestIncomeRecognizedCustomer       North America$22 $— $28 $2Europe47 — 45 —Asia/Pacific4 — 5 —Mining87 1 4 —Latin America37 — 9 —Caterpillar Power Finance162 1 287 1Total$359 $2 $378 $3Impaired Loans and Finance Leases With An AllowanceRecorded       Customer       North America$13 $— $17 $—Europe16 — 21 —Asia/Pacific14 1 16 —Mining73 2 2 —Latin America17 — 41 —Caterpillar Power Finance63 — 151 —Total$196 $3 $248 $—Total Impaired Loans and Finance Leases       Customer       North America$35 $— $45 $2Europe63 — 66 —Asia/Pacific18 1 21 —Mining160 3 6 —Latin America54 — 50 —Caterpillar Power Finance225 1 438 1Total$555 $5 $626 $3        (Millions of dollars)        Six Months EndedJune 30, 2014 Six Months EndedJune 30, 2013Impaired Loans and Finance Leases With No AllowanceRecordedAverageRecordedInvestment InterestIncomeRecognized AverageRecordedInvestment InterestIncomeRecognizedCustomer       North America$23 $1 $28 $3Europe47 — 45 —Asia/Pacific5 — 5 —Mining107 3 3 —Latin America26 — 9 —Caterpillar Power Finance188 3 286 1Total$396 $7 $376 $4Impaired Loans and Finance Leases With An AllowanceRecorded       Customer       North America$11 $— $20 $—Europe18 — 24 1Asia/Pacific15 1 17 1Mining51 2 1 —Latin America20 — 38 1Caterpillar Power Finance75 1 139 —Total$190 $4 $239 $3Total Impaired Loans and Finance Leases       Customer       North America$34 $1 $48 $3Europe65 — 69 1Asia/Pacific20 1 22 1Mining158 5 4 —Latin America46 — 47 1Caterpillar Power Finance263 4 425 1Total$586 $11 $615 $7         |
| Investment in customer loans and finance leases on non-accrual status                              | The investment in customer loans and finance leases on non-accrual status was as follows: (Millions of dollars)    June 30, 2014 December 31, 2013Customer   North America$27 $26Europe30 28Asia/Pacific80 50Mining26 23Latin America192 179Caterpillar Power Finance118 119Total$473 $425                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            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| Aging related to loans and finance leases                                                          | Aging related to loans and finance leases was as follows: (Millions of dollars)              June 30, 2014 31-60DaysPast Due 61-90DaysPast Due 91+DaysPast Due TotalPast Due Current TotalFinance Receivables 91+ Still AccruingCustomer             North America$34 $9 $31 $74 $6,926 $7,000 $5Europe45 25 35 105 2,860 2,965 10Asia/Pacific67 33 94 194 3,195 3,389 16Mining4 — 12 16 2,119 2,135 —Latin America68 46 164 278 2,692 2,970 2Caterpillar Power Finance13 — 130 143 3,045 3,188 17Dealer           North America— — — — 3,352 3,352 —Europe— — — — 539 539 —Asia/Pacific— — — — 696 696 —Mining— — — — 4 4 —Latin America— — — — 880 880 —Caterpillar Power Finance— — — — — — —Caterpillar Purchased Receivables           North America22 9 3 34 1,928 1,962 3Europe3 1 — 4 501 505 —Asia/Pacific— — — — 400 400 —Mining— — — — — — —Latin America— — — — 487 487 —Caterpillar Power Finance1 1 — 2 6 8 —Total$257 $124 $469 $850 $29,630 $30,480 $53               (Millions of dollars)              December 31, 2013 31-60DaysPast Due 61-90DaysPast Due 91+DaysPast Due TotalPast Due Current TotalFinanceReceivables 91+ Still AccruingCustomer             North America$37 $12 $24 $73 $6,522 $6,595 $—Europe26 15 29 70 2,805 2,875 6Asia/Pacific55 46 59 160 3,174 3,334 11Mining3 — 12 15 2,128 2,143 —Latin America54 25 165 244 2,474 2,718 5Caterpillar Power Finance55 30 60 145 2,946 3,091 —Dealer           North America— — — — 3,034 3,034 —Europe— — — — 569 569 —Asia/Pacific— — — — 706 706 —Mining— — — — 5 5 —Latin America— — — — 940 940 —Caterpillar Power Finance— — — — — — —Caterpillar Purchased Receivables           North America26 5 2 33 1,539 1,572 2Europe2 1 1 4 423 427 —Asia/Pacific— — — — 468 468 —Mining— — — — — — —Latin America— — — — 616 616 —Caterpillar Power Finance— — 1 1 8 9 1Total$258 $134 $353 $745 $28,357 $29,102 $25                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Allowance for credit losses and recorded investment in finance receivables                         | An analysis of the Allowance for credit losses was as follows:(Millions of dollars)        June 30, 2014Allowance for Credit Losses:Customer Dealer CaterpillarPurchased Receivables TotalBalance at beginning of year$365 $10 $3 $378Receivables written off(83) — — (83)Recoveries on receivables previously written off26 — — 26Provision for credit losses67 — — 67Adjustment due to sale of receivables(2) — — (2)Foreign currency translation adjustment1 — — 1Balance at end of period$374 $10 $3 $387        Individually evaluated for impairment$54 $— $— $54Collectively evaluated for impairment320 10 3 333Ending Balance$374 $10 $3 $387        Recorded Investment in Finance Receivables:       Individually evaluated for impairment$556 $— $— $556Collectively evaluated for impairment21,091 5,471 3,362 29,924Ending Balance$21,647 $5,471 $3,362 $30,480        (Millions of dollars)        December 31, 2013Allowance for Credit Losses:Customer Dealer CaterpillarPurchased Receivables TotalBalance at beginning of year$414 $9 $3 $426Receivables written off(179) — — (179)Recoveries on receivables previously written off56 — — 56Provision for credit losses83 1 — 84Adjustment due to sale of receivables(3) — — (3)Foreign currency translation adjustment(6) — — (6)Balance at end of year$365 $10 $3 $378        Individually evaluated for impairment$70 $— $— $70Collectively evaluated for impairment295 10 3 308Ending Balance$365 $10 $3 $378        Recorded Investment in Finance Receivables:       Individually evaluated for impairment$629 $— $— $629Collectively evaluated for impairment20,127 5,254 3,092 28,473Ending Balance$20,756 $5,254 $3,092 $29,102                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Recorded investment in performing and non-performing finance receivables                           | The recorded investment in performing and non-performing finance receivables was as follows:(Millions of dollars)        June 30, 2014 Customer Dealer CaterpillarPurchased Receivables TotalPerforming       North America$6,973 $3,352 $1,962 $12,287Europe2,935 539 505 3,979Asia/Pacific3,309 696 400 4,405Mining2,109 4 — 2,113Latin America2,778 880 487 4,145Caterpillar Power Finance3,070 — 8 3,078Total Performing$21,174 $5,471 $3,362 $30,007Non-Performing       North America$27 $— $— $27Europe30 — — 30Asia/Pacific80 — — 80Mining26 — — 26Latin America192 — — 192Caterpillar Power Finance118 — — 118Total Non-Performing$473 $— $— $473Total Performing and Non-Performing       North America$7,000 $3,352 $1,962 $12,314Europe2,965 539 505 4,009Asia/Pacific3,389 696 400 4,485Mining2,135 4 — 2,139Latin America2,970 880 487 4,337Caterpillar Power Finance3,188 — 8 3,196Total$21,647 $5,471 $3,362 $30,480        (Millions of dollars)        December 31, 2013 Customer Dealer CaterpillarPurchased Receivables TotalPerforming       North America$6,569 $3,034 $1,572 $11,175Europe2,847 569 427 3,843Asia/Pacific3,284 706 468 4,458Mining2,120 5 — 2,125Latin America2,539 940 616 4,095Caterpillar Power Finance2,972 — 9 2,981Total Performing$20,331 $5,254 $3,092 $28,677Non-Performing       North America$26 $— $— $26Europe28 — — 28Asia/Pacific50 — — 50Mining23 — — 23Latin America179 — — 179Caterpillar Power Finance119 — — 119Total Non-Performing$425 $— $— $425Total Performing and Non-Performing       North America$6,595 $3,034 $1,572 $11,201Europe2,875 569 427 3,871Asia/Pacific3,334 706 468 4,508Mining2,143 5 — 2,148Latin America2,718 940 616 4,274Caterpillar Power Finance3,091 — 9 3,100Total$20,756 $5,254 $3,092 $29,102                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Loans and finance lease receivables modified as TDRs                                               | Loans and finance lease receivables in the Customer portfolio segment modified as TDRs were as follows:(Dollars in millions)Three Months EndedJune 30, 2014 Three Months EndedJune 30, 2013 Number ofContracts Pre-TDROutstandingRecorded Investment Post-TDROutstandingRecorded Investment Number ofContracts Pre-TDROutstandingRecorded Investment Post-TDROutstandingRecorded InvestmentCustomer           North America1 $— $— 22 $2 $3Europe5 2 2 8 1 1Mining1 32 23 — — —Latin America1 — — 6 1 1Caterpillar Power Finance(1)5 35 34 — — —Total(2)13 $69 $59 36 $4 $5             Six Months EndedJune 30, 2014 Six Months EndedJune 30, 2013 Number ofContracts Pre-TDROutstandingRecorded Investment Post-TDROutstandingRecorded Investment Number ofContracts Pre-TDROutstandingRecorded Investment Post-TDROutstandingRecorded InvestmentCustomer           North America4 $2 $2 32 $4 $5Europe8 7 7 8 1 1Mining2 43 33 — — —Latin America2 29 28 6 1 1Caterpillar Power Finance(1)6 36 35 4 36 37Total(2)22 $117 $105 50 $42 $44            (1) During the three and six months ended June 30, 2014, there were no additional funds subsequently loaned to a borrower whose terms had been modified in a TDR.  During the three and six months ended June 30, 2013, $7 million and $12 million, respectively, of additional funds were subsequently loaned to a borrower whose terms had been modified in a TDR.  The $7 and $12 million of additional funds are not reflected in the table above as no incremental modifications have been made with the borrower during the periods presented.  At June 30, 2014, remaining commitments to lend additional funds to a borrower whose terms have been modified in a TDR were $2 million.(2) Modifications include extended contract maturities, inclusion of interest only periods, below market interest rates, extended skip payment periods and reduction of principal and/or accrued interest.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| TDR's with a payment default that had been modified within twelve months prior to the default date | TDRs in the Customer portfolio segment with a payment default during the three and six months ended June 30, 2014 and 2013, which had been modified within twelve months prior to the default date, were as follows:(Dollars in millions)Three Months EndedJune 30, 2014 Three Months EndedJune 30, 2013 Number ofContracts Post-TDRRecordedInvestment Number ofContracts Post-TDRRecordedInvestmentCustomer       North America— $— 5 $1Total— $— 5 $1         Six Months EndedJune 30, 2014 Six Months EndedJune 30, 2013 Number ofContracts Post-TDRRecordedInvestment Number ofContracts Post-TDRRecordedInvestmentCustomer       North America7 $1 13 $3Europe7 1 — —Caterpillar Power Finance— — 2 3Total14 $2 15 $6                                                                                                                                                                                                        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| - Definition
Tabular disclosure of troubled debt restructurings with a payment default that had been modified within twelve months.
+ References
No definition available.
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| - Definition
Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account.
+ References
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| - Definition
Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics.
+ References
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| - Definition
Tabular disclosure of impaired financing receivables.
+ References
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| - Definition
Tabular disclosure of financing receivables that are past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status.
+ References
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| - Definition
Tabular disclosure of nonaccrual and past due financing receivables (such as loans and trade receivables), including: (a) the recorded investment in loans and trade receivables, if applicable, on nonaccrual status as of each balance sheet date (b) the recorded investment in loans and trade receivables, if applicable, past due 90 days or more and still accruing.
+ References
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| - Definition
Tabular disclosure of financing receivables and troubled debt restructurings.
+ References
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