Guarantor Consolidating Financial Statements Guarantor Income Statements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Guarantor [Line Items]
Financial Services Revenue	$ 647	$ 417	$ 1,709	$ 1,179
Operating Leases, Income Statement, Lease Revenue	172	80	415	199
Other Income	48	17	119	54
Equity In Income Of Affiliates
Revenues	867	514	2,243	1,432
Salaries, Wages and Officers' Compensation	123	74	313	218
Other Cost and Expense, Operating	80	31	189	79
Operating Expenses	203	105	502	297
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	133	56	314	147
Provision for Loan and Lease Losses	117	78	311	188
Interest Expense	168	75	414	202
Acquisition Costs, Period Cost	7		29
Costs and Expenses	628	314	1,570	834
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	239	200	673	598
Income Tax Expense (Benefit)	(78)	(77)	(228)	(226)
Net Income (Loss) Attributable to Parent	161	123	445	372
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	256	133	475	379
Parent Company [Member]
Guarantor [Line Items]
Other Income	42	11	91	33
Equity In Income Of Affiliates	113	131	413	390
Revenues	155	142	504	423
Other Cost and Expense, Operating	(74)	4	(76)	12
Operating Expenses	(74)	4	(76)	12
Interest Expense	57	17	128	45
Costs and Expenses	(17)	21	52	57
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	172	121	452	366
Income Tax Expense (Benefit)	(11)	2	(7)	6
Net Income (Loss) Attributable to Parent	161	123	445	372
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	256	133	475	379
Guarantor Subsidiaries [Member]
Guarantor [Line Items]
Financial Services Revenue	37	43	106	111
Other Income	85	39	209	149
Equity In Income Of Affiliates	123	148	427	467
Revenues	245	230	742	727
Salaries, Wages and Officers' Compensation	56	51	158	147
Other Cost and Expense, Operating	42	(23)	(7)	(79)
Operating Expenses	98	28	151	68
Provision for Loan and Lease Losses	53	44	180	171
Interest Expense	54	34	143	134
Costs and Expenses	205	106	474	373
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	40	124	268	354
Income Tax Expense (Benefit)	25	6	52	34
Net Income (Loss) Attributable to Parent	65	130	320	388
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	79	130	341	388
Non-Guarantor Subsidiaries [Member]
Guarantor [Line Items]
Financial Services Revenue	610	374	1,603	1,068
Operating Leases, Income Statement, Lease Revenue	172	80	415	199
Other Income	100	51	228	205
Revenues	882	505	2,246	1,472
Salaries, Wages and Officers' Compensation	67	23	155	71
Other Cost and Expense, Operating	112	50	272	146
Operating Expenses	179	73	427	217
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	133	56	314	147
Provision for Loan and Lease Losses	64	34	131	17
Interest Expense	236	108	552	356
Acquisition Costs, Period Cost	7		29
Costs and Expenses	619	271	1,453	737
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	263	234	793	735
Income Tax Expense (Benefit)	(92)	(85)	(273)	266
Net Income (Loss) Attributable to Parent	171	149	520	469
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	266	169	553	487
Consolidation, Eliminations [Member]
Guarantor [Line Items]
Other Income	(179)	(84)	(409)	(333)
Equity In Income Of Affiliates	(236)	(279)	(840)	(857)
Revenues	(415)	(363)	(1,249)	(1,190)
Other Cost and Expense, Operating
Operating Expenses
Interest Expense	(179)	(84)	(409)	(333)
Costs and Expenses	(179)	(84)	(409)	(333)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(236)	(279)	(840)	(857)
Income Tax Expense (Benefit)
Net Income (Loss) Attributable to Parent	(236)	(279)	(840)	(857)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ (345)	$ (299)	$ (894)	$ (875)