Condensed Consolidated Balance Sheet (Unaudited) Parentheticals (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fixed maturities securities at amortized cost	$ 38,533	$ 38,170
Equity securities at cost	177	228
Allowance for uncollectible reinsurance receivables	71	73
Allowance for uncollectible insurance receivables	98	101
Accumulated depreciation on property and equipment	406	404
Other assets receivable from Loews Corporation		4
Other liabilities payable to Loews Corporation	$ 1
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	269,681,511	269,399,390
Treasury stock, shares	3,358,732	3,640,853