Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Investment portfolio:
Fixed maturity securities, available-for-sale, at fair value (amortized cost of $9,346 and $9,638)	$ 10,056		$ 10,142
Short term investments, at fair value	817		734
Other invested assets	212		223
Total investment portfolio	11,085		11,099
Cash	138		215
Premiums receivable, net of ceding commissions payable	1,005	[1]	1,003	[1]
Ceded unearned premium reserve	561		709
Deferred acquisition costs	116		132
Reinsurance recoverable on unpaid losses	58		69
Salvage and subrogation recoverable	456		368
Credit derivative assets	141		153
Deferred tax asset, net	721		804
Current income tax receivable	1		76
Financial guaranty variable interest entities’ assets, at fair value	2,688		2,819
Other assets	272		262
Total assets	17,242		17,709
Liabilities and shareholders’ equity
Unearned premium reserve	5,207		5,963
Loss and loss adjustment expense reserve	601		679
Reinsurance balances payable, net	219		171
Long-term debt	836		1,038
Credit derivative liabilities	1,934		1,457
Financial guaranty variable interest entities’ liabilities with recourse, at fair value	2,090		2,397
Financial guaranty variable interest entities’ liabilities without recourse, at fair value	1,051		1,061
Other liabilities	310		291
Total liabilities	12,248		13,057
Commitments and contingencies (See Note 16)
Common stock ($0.01 par value, 500,000,000 shares authorized; 194,003,297 and 182,235,798 shares issued and outstanding)	2		2
Additional paid-in capital	2,724		2,570
Retained earnings	1,749		1,708
Accumulated other comprehensive income, net of tax of $198 and $135	515		368
Deferred equity compensation (320,193 and 320,193 shares)	4		4
Total shareholders’ equity	4,994		4,652
Total liabilities and shareholders’ equity	$ 17,242		$ 17,709

[1] 2)Excludes $29 million, $28 million and $23 million as of December 31, 2012 , 2011 and 2010, respectively, related to consolidated FG VIEs.