Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues
Net earned premiums	$ 1,767	$ 1,751	$ 5,196	$ 5,173
Net investment income	524	354	1,461	1,412
Net realized investment gains (losses):
Other-than-temporary impairment losses	(18)	(56)	(56)	(99)
Other net realized investment (losses) gains	64	7	82	60
Net realized investment gains (losses)	46	(49)	26	(39)
Other revenues	96	97	293	286
Total revenues	2,433	2,153	6,976	6,832
Claims, Benefits and Expenses
Insurance claims and policyholders' benefits	1,202	1,200	3,949	4,008
Amortization of deferred acquisition costs	314	319	926	936
Other operating expenses	403	362	1,162	1,061
Interest	39	39	119	117
Total claims, benefits and expenses	1,958	1,920	6,156	6,122
Income (loss) from continuing operations before income tax	475	233	820	710
Income tax benefit (expense)	(132)	(55)	(202)	(161)
Net Income (Loss)	$ 343	$ 178	$ 618	$ 549
Earnings Per Share, Basic	$ 1.27	$ 0.66	$ 2.28	$ 2.03
Earnings Per Share, Diluted	1.26	0.66	2.28	2.03
Dividends declared per share	$ 0.25	$ 0.25	$ 2.75	$ 2.75
Weighted Average Outstanding Common Stock and Common Stock Equivalents
Basic	270.5	270.3	270.4	270.2
Diluted	271.2	270.8	271.0	270.7