Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Revenues:
Insurance premiums	$ 7,212		$ 7,271		$ 6,881
Net investment income	2,163		2,425		2,177
Investment gains (losses):
Other-than-temporary impairment losses	(77)		(74)		(127)
Portion of other-than-temporary impairment losses recognized in Other comprehensive income (loss)			(2)		(23)
Net impairment losses recognized in earnings	(77)		(76)		(150)
Other net investment gains	131		92		198
Total investment gains	54	[1]	16	[1]	48	[1]
Contract drilling revenues	2,737		2,844		2,936
Other revenues	2,159		2,057		2,030
Total	14,325		14,613		14,072
Expenses:
Insurance claims and policyholders' benefits	5,591		5,806		5,729
Amortization of deferred acquisition costs	1,317		1,362		1,274
Contract drilling expenses	1,524		1,573		1,537
Other operating expenses	3,585		3,170		3,084
Interest	498		425		426
Total	12,515		12,336		12,050
Income before income tax	1,810		2,277		2,022
Income tax expense	(457)		(656)		(513)
Income from continuing operations	1,353		1,621		1,509
Discontinued operations, net	(391)		(552)		(399)
Net income	962		1,069		1,110
Amounts attributable to noncontrolling interests	(371)		(474)		(542)
Net income	591		595		568
Net income attributable to Loews Corporation:
Income from continuing operations	962		1,149		968
Discontinued operations, net	(371)		(554)		(400)
Net income	$ 591		$ 595		$ 568
Basic net income per common share:
Income from continuing operations	$ 2.52		$ 2.96		$ 2.45
Discontinued operations, net	$ (0.97)		$ (1.43)		$ (1.01)
Net income	$ 1.55		$ 1.53		$ 1.44
Diluted net income per common share:
Income from continuing operations	$ 2.52		$ 2.95		$ 2.44
Discontinued operations, net	$ (0.97)		$ (1.42)		$ (1.01)
Net income	$ 1.55		$ 1.53		$ 1.43
Dividends per share	$ 0.25		$ 0.25		$ 0.25
Basic weighted average number of shares outstanding	381.92		388.64		395.12
Diluted weighted average number of shares outstanding	382.55		389.51		395.87

[1] Includes gross realized gains of $178, $198 and $241 and gross realized losses of $136, $179 and $187 on available-for-sale securities for the years ended December 31, 2014, 2013 and 2012.