Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Investment portfolio:
Fixed-maturity securities, available-for-sale, at fair value (amortized cost of $9,310 and $9,972)	$ 9,833	$ 10,491
Short-term investments, at fair value	349	767
Other invested assets	132	126
Total investment portfolio	10,314	11,384
Cash	885	75
Premiums receivable, net of commissions payable	700	729
Ceded unearned premium reserve	365	381
Deferred acquisition costs	120	121
Reinsurance recoverable on unpaid losses	77	78
Salvage and subrogation recoverable	128	151
Credit derivative assets	77	68
Deferred tax asset, net	218	260
Financial guaranty variable interest entities’ assets, at fair value	1,499	1,402
Other assets	294	276
Total assets	14,677	14,925
Liabilities and shareholders’ equity
Unearned premium reserve	4,127	4,261
Loss and loss adjustment expense reserve	787	799
Reinsurance balances payable, net	74	107
Long-term debt	1,304	1,303
Credit derivative liabilities	859	963
Current income tax payable	0	5
Financial guaranty variable interest entities’ liabilities with recourse, at fair value	1,278	1,277
Financial guaranty variable interest entities’ liabilities without recourse, at fair value	145	142
Other liabilities	317	310
Total liabilities	8,891	9,167
Commitments and contingencies (See Note 14)
Common stock ($0.01 par value, 500,000,000 shares authorized; 152,835,331 and 158,306,661 shares issued and outstanding)	2	2
Additional paid-in capital	1,733	1,887
Retained earnings	3,676	3,494
Accumulated other comprehensive income, net of tax of $149 and $159	370	370
Deferred equity compensation (320,193 and 320,193 shares)	5	5
Total shareholders’ equity	5,786	5,758
Total liabilities and shareholders’ equity	$ 14,677	$ 14,925