Segment and Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information
External Revenues	$ 642	$ 651	$ 659	$ 643	$ 648	$ 653	$ 683	$ 689	$ 2,595	$ 2,673	$ 2,885
Profit before income taxes	122	$ 146	$ 148	$ 145	129	$ 153	$ 150	$ 187	561	619	753
Interest Expense									611	593	631
Depreciation on equipment leased to others									841	836	870
Provision for credit losses									135	119	139
Assets	33,615				33,867				33,615	33,867	35,134
Capital expenditures									1,636	1,461	1,627
Operating Segments
Segment Reporting Information
External Revenues									2,547	2,638	2,853
Profit before income taxes									620	691	810
Interest Expense									604	600	641
Depreciation on equipment leased to others									838	836	870
Provision for credit losses									138	117	141
Assets	32,383				32,423				32,383	32,423	33,921
Capital expenditures									1,633	1,449	1,615
Unallocated
Segment Reporting Information
External Revenues									80	65	60
Profit before income taxes									(138)	(101)	(86)
Interest Expense									116	67	46
Depreciation on equipment leased to others									0	0	0
Provision for credit losses									0	0	0
Assets	1,688				1,743				1,688	1,743	1,551
Capital expenditures									0	9	10
Timing
Segment Reporting Information
External Revenues									(32)	(30)	(28)
Profit before income taxes									(12)	(32)	(8)
Interest Expense									0	0	0
Depreciation on equipment leased to others									3	0	0
Provision for credit losses									(3)	2	(2)
Assets	27				164				27	164	120
Capital expenditures									3	3	2
Methodology
Segment Reporting Information
External Revenues									0	0	0
Profit before income taxes									91	61	37
Interest Expense									(109)	(74)	(56)
Depreciation on equipment leased to others									0	0	0
Provision for credit losses									0	0	0
Assets	(220)				(216)				(220)	(216)	(215)
Capital expenditures									0	0	0
Inter-segment Eliminations
Segment Reporting Information
External Revenues									0	0	0
Profit before income taxes									0	0	0
Interest Expense									0	0	0
Depreciation on equipment leased to others									0	0	0
Provision for credit losses									0	0	0
Assets	(263)				(247)				(263)	(247)	(243)
Capital expenditures									0	0	0
North America | Operating Segments
Segment Reporting Information
External Revenues									1,230	1,156	1,067
Profit before income taxes									326	370	355
Interest Expense									287	261	240
Depreciation on equipment leased to others									477	409	361
Provision for credit losses									28	7	3
Assets	14,925				14,419				14,925	14,419	13,633
Capital expenditures									1,180	1,118	1,068
Europe | Operating Segments
Segment Reporting Information
External Revenues									268	284	353
Profit before income taxes									86	96	114
Interest Expense									33	31	52
Depreciation on equipment leased to others									83	76	94
Provision for credit losses									0	3	10
Assets	3,834				3,758				3,834	3,758	4,276
Capital expenditures									147	136	133
Asia/Pacific | Operating Segments
Segment Reporting Information
External Revenues									254	285	368
Profit before income taxes									82	65	129
Interest Expense									81	100	116
Depreciation on equipment leased to others									29	21	24
Provision for credit losses									3	29	35
Assets	3,620				3,923				3,620	3,923	4,766
Capital expenditures									74	37	34
Latin America and CPF | Operating Segments
Segment Reporting Information
External Revenues									487	533	594
Profit before income taxes									77	108	144
Interest Expense									156	152	166
Depreciation on equipment leased to others									61	104	118
Provision for credit losses									100	64	62
Assets	7,270				7,376				7,270	7,376	7,994
Capital expenditures									26	89	111
Mining | Operating Segments
Segment Reporting Information
External Revenues									308	380	471
Profit before income taxes									49	52	68
Interest Expense									47	56	67
Depreciation on equipment leased to others									188	226	273
Provision for credit losses									7	14	31
Assets	$ 2,734				$ 2,947				2,734	2,947	3,252
Capital expenditures									$ 206	$ 69	$ 269