Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Revenues	$ 668	$ 675	$ 1,336	$ 1,315
Segment Profit	144	152	314	267
Interest Expense	198	209	402	413
Depreciation on equipment leased to others	172	176	341	347
Provision for credit losses	34	31	53	86
Segment Assets	32,755		32,755		30,112
Capital expenditures	457	339	800	519
Reportable Segment
Segment Reporting Information [Line Items]
Revenues	658	663	1,315	1,290
Segment Profit	176	165	372	293
Interest Expense	195	203	388	401
Depreciation on equipment leased to others	171	175	340	345
Provision for credit losses	29	34	42	88
Segment Assets	31,526		31,526		28,927
Capital expenditures	456	336	799	516
North America
Segment Reporting Information [Line Items]
Revenues	240	248	478	495
Segment Profit	65	61	139	103
Interest Expense	72	80	145	163
Depreciation on equipment leased to others	69	71	135	141
Provision for credit losses	5	4	1	26
Segment Assets	11,570		11,570		11,177
Capital expenditures	119	159	184	213
Europe and CPF
Segment Reporting Information [Line Items]
Revenues	113	127	233	251
Segment Profit	28	14	63	44
Interest Expense	32	36	66	73
Depreciation on equipment leased to others	20	23	39	46
Provision for credit losses	9	27	17	39
Segment Assets	7,281		7,281		6,601
Capital expenditures	52	26	143	49
Asia/Pacific
Segment Reporting Information [Line Items]
Revenues	95	84	187	155
Segment Profit	30	32	66	54
Interest Expense	36	32	67	60
Depreciation on equipment leased to others	5	5	10	8
Provision for credit losses	8	5	12	13
Segment Assets	5,254		5,254		4,557
Capital expenditures	12	20	70	26
Latin America
Segment Reporting Information [Line Items]
Revenues	94	89	189	166
Segment Profit	32	32	66	52
Interest Expense	32	33	64	61
Depreciation on equipment leased to others	15	10	29	20
Provision for credit losses	4	2	7	11
Segment Assets	4,292		4,292		3,947
Capital expenditures	28	34	49	74
Mining
Segment Reporting Information [Line Items]
Revenues	116	115	228	223
Segment Profit	21	26	38	40
Interest Expense	23	22	46	44
Depreciation on equipment leased to others	62	66	127	130
Provision for credit losses	3	(4)	5	(1)
Segment Assets	3,129		3,129		2,645
Capital expenditures	245	97	353	154
Unallocated
Segment Reporting Information [Line Items]
Revenues	16	17	32	36
Segment Profit	(23)	(12)	(44)	(25)
Interest Expense	11	3	24	12
Depreciation on equipment leased to others	1	1	1	2
Provision for credit losses	0	(1)	1	2
Segment Assets	1,437		1,437		1,350
Capital expenditures	0	3	0	3
Timing
Segment Reporting Information [Line Items]
Revenues	(6)	(5)	(11)	(11)
Segment Profit	(11)	(4)	(14)	(3)
Interest Expense	5	7	2	5
Depreciation on equipment leased to others	0	0	0	0
Provision for credit losses	5	(2)	10	(4)
Segment Assets	7		7		67
Capital expenditures	1	0	1	0
Methodology
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Segment Profit	2	3	0	2
Interest Expense	(13)	(4)	(12)	(5)
Depreciation on equipment leased to others	0	0	0	0
Provision for credit losses	0	0	0	0
Segment Assets	(24)		(24)		15
Capital expenditures	0	0	0	0
Inter-segment Eliminations
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Segment Profit	0	0	0	0
Interest Expense	0	0	0	0
Depreciation on equipment leased to others	0	0	0	0
Provision for credit losses	0	0	0	0
Segment Assets	(191)		(191)		(247)
Capital expenditures	$ 0	$ 0	$ 0	$ 0