Financial Guaranty Insurance Contracts (Details 13) (USD $)	Jun. 30, 2012		Dec. 31, 2011
Components of Net Reserves (Salvage)
Loss and loss adjustment expense reserve	$ 995,217,000		$ 679,011,000
Reinsurance recoverable on unpaid losses	(170,495,000)		(69,300,000)
Subtotal	824,700,000		609,700,000
Salvage and subrogation recoverable	(376,760,000)		(367,718,000)
Salvage and subrogation payable	40,300,000	[1]	40,600,000	[1]
Subtotal	(336,500,000)		(327,100,000)
Total	488,200,000	[2]	282,600,000	[2]
Financial Guaranty
Components of Net Reserves (Salvage)
Total	492,300,000	[3]	280,700,000	[3]
Other
Components of Net Reserves (Salvage)
Total	$ (4,100,000)		$ 1,900,000

[1] Recorded as a component of reinsurance balances payable.

[2] See “Components of Net Reserves (Salvage)” table for loss and LAE reserve and salvage and subrogation recoverable components.

[3] See table “Components of net reserves (salvage).”