Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Net earned premiums	$ 7,428	$ 7,312	$ 6,988
Net investment income	2,118	1,817	2,034
Net investment gains (losses):
Other-than-temporary impairment losses	(44)	(21)	(14)
Other net investment gains (losses)	73	(31)	107
Net investment gains (losses)	29	(52)	93
Non-insurance warranty revenue	1,161	1,007	390
Other revenues	31	50	37
Total revenues	10,767	10,134	9,542
Claims, Benefits and Expenses
Insurance claims and policyholders’ benefits	5,806	5,572	5,310
Amortization of deferred acquisition costs	1,383	1,335	1,233
Non-insurance warranty expense	1,082	923	299
Other operating expenses	1,142	1,202	1,229
Interest	131	138	161
Total claims, benefits and expenses	9,544	9,170	8,232
Income before income tax	1,223	964	1,310
Income tax expense	(223)	(151)	(411)
Net income	$ 1,000	$ 813	$ 899
Basic earnings per share
Basic earnings per share (in usd per share)	$ 3.68	$ 2.99	$ 3.32
Diluted earnings per share
Diluted earnings per share (in usd per share)	$ 3.67	$ 2.98	$ 3.30
Weighted Average Outstanding Common Stock and Common Stock Equivalents
Basic (in shares)	271.6	271.5	271.1
Diluted (in shares)	272.5	272.5	272.1