Consolidated Balance Sheet Parentheticals (Parentheticals) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Fixed maturities securities at amortized cost	$ 39,311	$ 38,170
Equity securities at cost	179	228
Allowance for uncollectible reinsurance receivables	71	73
Allowance for uncollectible insurance receivables	84	101
Accumulated depreciation on property and equipment	365	404
Other assets receivable from Loews Corporation		4
Other liabilities payable to Loews Corporation	$ 178
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	269,717,583	269,399,390
Treasury stock, shares	3,322,660	3,640,853