Guarantor Consolidating Financial Statements Current Period Guarantor Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
Guarantor [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 1,756	$ 1,289	$ 1,806	$ 572
Notes, Loans and Financing Receivable, Net	23,867	10,998
Restricted Cash and Investments	1,371	744
Restricted Cash and Cash Equivalents	1,350	744
Property, Plant and Equipment, Net	124	52
Property Subject to or Available for Operating Lease, Net	3,100	1,703
Deferred Tax Assets, Net	69	107
Goodwill	1,156	1,108
Intercompany Receivable	111	66
Other Assets	330	130
Due from Affiliates
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Assets	31,884	16,197
Line of Credit Facility, Amount Outstanding	4,800	9,378
Secured Debt	18,447	9,378
Securitized Debt Obligation Liability	5,228	1,500
Accounts Payable And Accrued Expenses	594	217
Deferred Revenue	157	70
Deferred Tax Liabilities, Net	64
Taxes Payable	126	93
Intercompany Taxes Payable	598	559
Derivative Liabilities	153	1
Accounts Payable, Related Parties	357
Due to Affiliate
Liabilities	25,724	11,818
Common Stock, Value, Issued
Additional Paid in Capital, Common Stock	4,765	3,459
Accumulated Other Comprehensive Income (Loss), Net of Tax	27	(3)
Retained Earnings (Accumulated Deficit)	1,368	923
Stockholders' Equity Attributable to Parent	6,160	4,379
Liabilities and Equity	31,884	16,197
Parent Company [Member]
Guarantor [Line Items]
Deferred Tax Assets, Net	3	39
Goodwill	1,095	1,095
Intercompany Receivable	36	66
Other Assets	76	14
Due from Affiliates	4,259	2,063
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	6,345	3,274
Assets	11,814	6,551
Securitized Debt Obligation Liability	4,000	1,500
Accounts Payable And Accrued Expenses	141	22
Deferred Revenue
Deferred Tax Liabilities, Net	(28)
Taxes Payable	79	91
Intercompany Taxes Payable	598	559
Derivative Liabilities
Accounts Payable, Related Parties	1
Due to Affiliate	863
Liabilities	5,654	2,172
Additional Paid in Capital, Common Stock	4,765	3,459
Accumulated Other Comprehensive Income (Loss), Net of Tax	27	(3)
Retained Earnings (Accumulated Deficit)	1,368	923
Stockholders' Equity Attributable to Parent	6,160	4,379
Liabilities and Equity	11,814	6,551
Guarantor Subsidiaries [Member]
Guarantor [Line Items]
Cash and Cash Equivalents, at Carrying Value	1,250	1,252	1,742	500
Notes, Loans and Financing Receivable, Net	926	1,558
Restricted Cash and Investments
Property, Plant and Equipment, Net	4	4
Property Subject to or Available for Operating Lease, Net
Deferred Tax Assets, Net		(28)
Goodwill
Intercompany Receivable
Other Assets	56	18
Due from Affiliates	863
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	2,990	2,193
Assets	6,089	4,997
Accounts Payable And Accrued Expenses	162	90
Deferred Tax Liabilities, Net	164
Taxes Payable		4
Derivative Liabilities	9
Due to Affiliate	2,179	1,669
Liabilities	2,514	1,763
Additional Paid in Capital, Common Stock	79	79
Accumulated Other Comprehensive Income (Loss), Net of Tax	10	(11)
Retained Earnings (Accumulated Deficit)	3,486	3,166
Stockholders' Equity Attributable to Parent	3,575	3,234
Liabilities and Equity	6,089	4,997
Non-Guarantor Subsidiaries [Member]
Guarantor [Line Items]
Cash and Cash Equivalents, at Carrying Value	506	37	64	72
Notes, Loans and Financing Receivable, Net	22,941	9,440
Restricted Cash and Investments	1,371	744
Property, Plant and Equipment, Net	120	48
Property Subject to or Available for Operating Lease, Net	3,100	1,703
Deferred Tax Assets, Net	66	96
Goodwill	61	13
Intercompany Receivable	75
Other Assets	202	98
Due from Affiliates
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Assets	28,442	12,179
Line of Credit Facility, Amount Outstanding	18,447	9,378
Securitized Debt Obligation Liability	1,228
Accounts Payable And Accrued Expenses	295	105
Deferred Revenue	157	70
Deferred Tax Liabilities, Net	(72)
Taxes Payable	47	(2)
Intercompany Taxes Payable
Derivative Liabilities	144	1
Accounts Payable, Related Parties	356
Due to Affiliate	2,080	394
Liabilities	22,682	9,946
Common Stock, Value, Issued	801	570
Additional Paid in Capital, Common Stock	2,864	123
Accumulated Other Comprehensive Income (Loss), Net of Tax	47	13
Retained Earnings (Accumulated Deficit)	2,048	1,527
Stockholders' Equity Attributable to Parent	5,760	2,233
Liabilities and Equity	28,442	12,179
Consolidation, Eliminations [Member]
Guarantor [Line Items]
Intercompany Receivable
Other Assets	(4)
Due from Affiliates	(5,122)	(2,063)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(9,335)	(5,467)
Assets	(14,461)	(7,530)
Accounts Payable And Accrued Expenses	(4)
Intercompany Taxes Payable
Due to Affiliate	(5,122)	(2,063)
Liabilities	(5,126)	(2,063)
Common Stock, Value, Issued	(801)	(570)
Additional Paid in Capital, Common Stock	(2,943)	(202)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(57)	(2)
Retained Earnings (Accumulated Deficit)	(5,534)	(4,693)
Stockholders' Equity Attributable to Parent	(9,335)	(5,467)
Liabilities and Equity	$ (14,461)	$ (7,530)