Consolidated Balance Sheet Parentheticals (Parentheticals) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Fixed maturities securities at amortized cost	$ 38,170	$ 37,345
Equity securities at cost	228	288
Allowance for uncollectible reinsurance receivables	73	91
Allowance for uncollectible insurance receivables	101	112
Accumulated depreciation on property and equipment	404	420
Other assets receivable from Loews Corporation	$ 4	$ 130
Common stock, par value	$ 2.50	$ 2.50
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	273,040,243	273,040,243
Common stock, shares outstanding	269,399,390	269,274,900
Treasury stock, shares	3,640,853	3,765,343