Related Party Transactions (Details) (USD $)						0 Months Ended	9 Months Ended	0 Months Ended				3 Months Ended		9 Months Ended							0 Months Ended		0 Months Ended	1 Months Ended			1 Months Ended			3 Months Ended		9 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Aug. 05, 2013 Cross currency interest rate derivative AIGFP item	Aug. 31, 2012 Cross currency interest rate derivative AIGFP item	Jul. 31, 2012 Cross currency interest rate derivative AIGFP item	Apr. 02, 2013 SCH	Sep. 30, 2013 SCH	Apr. 02, 2013 SCH Personal and real estate loans	Apr. 02, 2013 SCH Minimum Personal and real estate loans item	Apr. 02, 2013 Newcastle Investment Corp.	Apr. 02, 2013 BTO Willow Holdings, L.P	Sep. 30, 2013 SFI	Sep. 30, 2012 SFI	Sep. 30, 2013 SFI	Sep. 30, 2012 SFI	Jul. 10, 2013 SFI	Jan. 11, 2013 SFI	Dec. 31, 2012 SFI	Jul. 11, 2012 SFI	Jan. 10, 2012 SFI	Jul. 26, 2013 SFI Intercompany demand note	Jul. 26, 2013 SFI Maximum Intercompany demand note	Aug. 05, 2013 SFI AIGFP	Aug. 31, 2012 SFI AIGFP	Dec. 31, 2012 SFI AIGFP	Jul. 31, 2012 SFI AIGFP	Feb. 28, 2013 SFI SFSSC	Dec. 31, 2012 SFI SFSSC	Aug. 31, 2012 SFI SFSSC	Sep. 30, 2013 SFI SFSSC	Mar. 31, 2013 SFI SFSSC	Sep. 30, 2013 SFI SFSSC	Sep. 30, 2013 SGSC SFMC Services Agreement	Sep. 30, 2013 SGSC SFMC Services Agreement	Dec. 31, 2012 SGSC SFMC Services Agreement	Sep. 30, 2013 SGSC SFMC License Agreement	Sep. 30, 2013 SGSC SFMC License Agreement	Sep. 30, 2013 SGSC SFMC Building Lease	Sep. 30, 2013 SGSC SFMC Building Lease item	Sep. 30, 2013 Second Street Funding Corporation	Dec. 31, 2012 Second Street Funding Corporation
Related party transactions
Note receivable from SFI	$ 537,989,000	$ 537,989,000										$ 538,000,000		$ 538,000,000				$ 538,000,000
Interest receivable on note	87,399,000	89,751,000										1,400,000		1,400,000				1,500,000
Interest rate for the unpaid principal balance														prime rate
Interest revenue on note receivable												4,400,000	4,400,000	14,400,000	13,100,000
Receivables from parent and affiliates																																								17,700,000	16,200,000
Amount advanced						150,000,000																50,000,000
Interest rate of intercompany promissory note (as a percent)						7.00%
Equity interest (as a percent)						47.00%				30.00%	23.00%
Number of loans									415,000
Purchase price of finance receivable								3,000,000,000
Unpaid principal balance	11,654,590,000	12,011,250,000						3,900,000,000
Interest revenue on promissory note							1,300,000
Interest rate of intercompany demand note (as a percent)																					7.00%
Amount that will be received by counterparty																												11,000,000	25,000,000
Annual fee rate on average monthly unreimbursed amount (as a percent)																												8.00%	8.00%
Additional amount paid towards settlement																											3,100,000	5,800,000
Resulting amount payable towards settlement																												30,800,000
Interest payable																												100,000
Fees paid												700,000	5,900,000	2,700,000	5,900,000															200,000		200,000
Fees received																															600,000
Capital contributions received to satisfy hybrid debt semi-annual interest payments																10,500,000	10,500,000		10,500,000	10,500,000
Amount of cash collateral posted by related party																									40,000,000	60,000,000
Number of positions			0		2
Number of positions terminated				1
Reduction in cash collateral																								20,000,000
Amount of cash collateral returned																							40,000,000
Fees payable																																	5,700,000	5,700,000	1,900,000
Service fee expenses																																	34,800,000	101,700,000
Percentage of allocated cost of service																																		100.00%
Percentage of actual cost incurred																																					100.00%
Margin on the systems and software (as a percent)																																					7.00%
License fees																																				1,600,000	4,600,000
Number of buildings leased																																							6
Annual rental fees																																							3,700,000
Rent charged																																						$ 900,000	$ 2,800,000