Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets
Fixed maturity securities at fair value (amortized cost of $38,533 and $38,170)	$ 42,799	$ 42,633
Equity securities at fair value (cost of $177 and $228)	201	249
Limited partnership investments	2,564	2,462
Other invested assets	49	59
Mortgage loans	425	401
Short term investments	1,555	1,832
Total investments	47,593	47,636
Cash	123	156
Reinsurance receivables (less allowance for uncollectible receivables of $71 and $73)	6,066	6,158
Insurance receivables (less allowance for uncollectible receivables of $98 and $101)	1,974	1,882
Accrued investment income	476	434
Deferred acquisition costs	641	598
Deferred income taxes	21	93
Property and equipment at cost (less accumulated depreciation of $406 and $404)	323	326
Goodwill	151	154
Other assets (includes $0 and $4 due from Loews Corporation)	1,080	773
Separate account business	279	312
Total assets	58,727	58,522
Liabilities
Claim and claim adjustment expenses	24,511	24,763
Unearned premiums	3,759	3,610
Future policy benefits	11,469	11,475
Policyholders’ funds	154	157
Short term debt	13	13
Long term debt	2,558	2,557
Other liabilities (includes $1 and $0 due to Loews Corporation)	3,579	3,321
Separate account business	279	312
Total liabilities	46,322	46,208
Commitments and contingencies (Notes C, G and J)
Stockholders' Equity
Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 269,681,511 and 269,399,390 shares outstanding)	683	683
Additional paid-in capital	2,138	2,146
Retained earnings	8,969	8,774
Accumulated other comprehensive income (loss)	727	831
Treasury stock (3,358,732 and 3,640,853 shares), at cost	(92)	(99)
Notes receivable for the issuance of common stock	(20)	(21)
Total stockholders’ equity	12,405	12,314
Total liabilities and stockholders' equity	$ 58,727	$ 58,522