Unaudited Consolidated Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure Unaudited Consolidated Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Information

In management's opinion, the following quarterly financial information fairly presents the results of operations for such periods and is prepared on a basis consistent with our annual audited financial statements.

(In millions, except for per-share amounts)	March 31, 2012				June 30, 2012				September 30, 2012				December 31, 2012
Premium income		$	5,378			$	5,467			$	5,660			$	5,643
Net investment income		882				845				869				876
Realized investment gains (losses)		(45		)		(418		)		286				(171		)
Other income		25				8				32				27
Total revenues		6,240				5,902				6,847				6,375
Total benefits and expenses		5,038				5,161				5,367				5,495
Earnings before income taxes		1,202				741				1,480				880
Total income tax		417				258				463				299
Net earnings		$	785			$	483			$	1,017			$	581
Net earnings per basic share		$	1.68			$	1.04			$	2.17			$	1.24
Net earnings per diluted share		1.68				1.03				2.16				1.24
Quarterly amounts may not agree in total to the corresponding annual amounts due to rounding.
(In millions, except for per-share amounts)	March 31, 2011				June 30, 2011				September 30, 2011				December 31, 2011
Premium income		$	4,872			$	4,956			$	5,210			$	5,324
Net investment income		794				784				843				858
Realized investment gains (losses)		(579		)		(668		)		(83		)		(223		)
Other income		30				16				17				20
Total revenues		5,117				5,088				5,987				5,979
Total benefits and expenses		4,526				4,644				4,895				5,157
Earnings before income taxes		591				444				1,092				822
Total income tax		202				170				356				284
Net earnings		$	389			$	274			$	736			$	538
Net earnings per basic share		$	.83			$	.59			$	1.58			$	1.16
Net earnings per diluted share		.83				.58				1.57				1.15