Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues
Earned premiums	$ 14,141	$ 13,697	$ 13,485
Fee income	980	857	876
Net investment income	1,603	1,577	1,561
Net realized capital gains (losses):
Total other-than-temporary impairment (“OTTI”) losses	(15)	(35)	(47)
OTTI losses recognized in other comprehensive income	7	8	6
Net OTTI losses recognized in earnings	(8)	(27)	(41)
Other net realized capital gains (losses)	173	(83)	29
Total net realized capital gains (losses)	165	(110)	(12)
Other revenues	85	86	87
Total revenues	16,974	16,107	15,997
Benefits, losses and expenses
Benefits, losses and loss adjustment expenses	10,174	9,961	9,325
Amortization of deferred policy acquisition costs (DAC)	1,372	1,377	1,364
Insurance operating costs and other expenses	4,375	3,341	3,459
Loss on extinguishment of debt	0	0	21
Loss on reinsurance transaction	0	650	0
Interest expense	316	327	346
Amortization of other intangible assets	14	4	4
Total benefits, losses and expenses	16,251	15,660	14,519
Income from continuing operations before income taxes	723	447	1,478
Income tax expense (benefit)	985	(166)	289
(Loss) Income from continuing operations, net of tax	(262)	613	1,189
(Loss) income from discontinued operations, net of tax	(2,869)	283	493
Net (loss) income	$ (3,131)	$ 896	$ 1,682
(Loss) income from continuing operations, net of tax, per common share
Basic (in USD per share)	$ (0.72)	$ 1.58	$ 2.86
Diluted (in USD per share)	(0.72)	1.55	2.80
Net (loss) income per common share
Basic (in USD per share)	(8.61)	2.31	4.05
Diluted (in USD per share)	(8.61)	2.27	3.96
Cash dividends declared per common share (in USD per share)	$ 0.94	$ 0.86	$ 0.78