| **Segment and Geographic Information (Tables)** | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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| **Segment Reporting [Abstract]**                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Segment Information                             | Supplemental segment data and reconciliations to consolidated external reporting for the years ended December 31 was as follows:(Millions of dollars) 2015External Revenues Profitbefore income taxes InterestExpense Depreciationon equipmentleased toothers Provisionforcreditlosses Assets atDecember 31,2015 CapitalexpendituresNorth America$1,156 $370 $261 $409 $7 $14,444 $1,118Europe284 96 31 76 3 3,758 136Asia/Pacific285 65 100 21 29 3,924 37Latin America and CPF533 108 152 104 64 7,381 89Mining373 47 54 225 14 2,848 69Total Segments2,631 686 598 835 117 32,355 1,449Unallocated72 (96) 69 1 — 1,847 9Timing(30) (32) — — 2 164 3Methodology— 61 (74) — — (216) —Inter-segment Eliminations (1)— — — — — (247) —Total$2,673 $619 $593 $836 $119 $33,903 $1,461               2014External Revenues Profitbefore income taxes InterestExpense Depreciationon equipmentleased toothers Provisionforcreditlosses Assets atDecember 31,2014 CapitalexpendituresNorth America$1,067 $355 $240 $361 $3 $13,661 $1,068Europe353 114 52 94 10 4,276 133Asia/Pacific368 129 116 24 35 4,767 34Latin America and CPF594 144 166 118 62 8,001 111Mining461 64 65 272 29 3,161 269Total Segments2,843 806 639 869 139 33,866 1,615Unallocated70 (82) 48 1 2 1,648 10Timing(28) (8) — — (2) 120 2Methodology— 37 (56) — — (215) —Inter-segment Eliminations (1)— — — — — (243) —Total$2,885 $753 $631 $870 $139 $35,176 $1,627               2013External Revenues Profitbefore income taxes InterestExpense Depreciationon equipmentleased toothers Provisionforcreditlosses Assets atDecember 31,2013 CapitalexpendituresNorth America$946 $283 $259 $293 $— $12,160 $773Europe347 109 59 80 13 4,720 241Asia/Pacific399 156 135 25 9 5,251 54Latin America and CPF572 126 188 99 69 8,295 273Mining474 85 79 272 12 3,441 469Total Segments2,738 759 720 769 103 33,867 1,810Unallocated73 (73) 53 1 2 1,595 10Timing(26) (10) — — (4) 68 2Methodology— 18 (39) — — (189) —Inter-segment Eliminations (1)— — — — — (227) —Total$2,785 $694 $734 $770 $101 $35,114 $1,822               |
| Geographic information                          | Geographic information: (Millions of dollars)        2015 2014 2013Revenues      Inside U.S. $1,330 $1,219 $1,045Inside Canada 198 259 329Inside Australia 200 261 287All other 945 1,146 1,124Total $2,673 $2,885 $2,785       Equipment on Operating Leases and Non-Leased  Equipment (included in Other Assets), Net 2015 2014  Inside U.S. $2,058 $1,696  Inside Canada 572 756  Inside Australia 282 358  All other 716 896  Total $3,628 $3,706                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |

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| - Definition
Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material.  An entity may also provide subtotals of geographic information about groups of countries.
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| - Definition
Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.
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