Consolidated Statement of Income (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Premiums		$ 6,988	$ 6,695	$ 13,843	$ 13,232
Net investment income		648	595	1,230	1,198
Fee income		116	112	225	215
Net realized investment gains	[1]	25	36	78	25
Other revenues		57	39	129	93
Total revenues		7,834	7,477	15,505	14,763
Claims and expenses
Claims and claim adjustment expenses		4,821	4,562	9,263	8,858
Amortization of deferred acquisition costs		1,134	1,081	2,251	2,142
General and administrative expenses		1,125	1,113	2,182	2,175
Interest expense		89	90	177	179
Total claims and expenses		7,169	6,846	13,873	13,354
Income before income taxes		665	631	1,632	1,409
Income tax expense		108	107	279	216
Net income		$ 557	$ 524	$ 1,353	$ 1,193
Net income per share
Basic (in dollars per share)		$ 2.11	$ 1.93	$ 5.12	$ 4.39
Diluted (in dollars per share)		$ 2.10	$ 1.92	$ 5.08	$ 4.35
Weighted average number of common shares outstanding
Basic (in shares)		261.3	268.7	262.1	269.8
Diluted (in shares)		263.7	271.1	264.2	272.5
Cash dividends declared per common share (in dollars per share)		$ 0.82	$ 0.77	$ 1.59	$ 1.49

[1] Total other-than-temporary impairment (OTTI) gains (losses) were $(1) million for each of the three months ended June 30, 2019 and 2018, and $(2) million and $(1) million for the six months ended June 30, 2019 and June 30, 2018, respectively.  Of total OTTI, credit losses of $(1) million for each of the three months ended June 30, 2019 and 2018, and $(2) million and $(1) million for the six months ended June 30, 2019 and June 30, 2018, respectively, were recognized in net realized investment gains.  In addition, unrealized gains (losses) from other changes in total OTTI of $0 million for each of the three months and six months ended June 30, 2019 and 2018 were recognized in other comprehensive income (loss) as part of changes in net unrealized gains (losses) on investment securities having credit losses recognized in the consolidated statement of income.