Consolidated Statement of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Property and casualty insurance net earned premiums	$ 1,065	$ 1,027	$ 2,087	$ 2,025
Life, accident and health net earned premiums	5	6	11	12
Net investment income	460	423	895	834
Realized gains (losses) on:
Securities	8	(16)	11	(34)
Subsidiaries	0	2	0	2
Income (loss) of managed investment entities:
Investment income	50	48	101	93
Gain (loss) on change in fair value of assets/liabilities	11	11	11	(2)
Other income	47	80	106	126
Total revenues	1,646	1,581	3,222	3,056
Costs and Expenses:
Property and casualty insurance: Losses and loss adjustment expenses	635	687	1,244	1,268
Property and casualty insurance: Commissions and other underwriting expenses	366	348	705	682
Annuity benefits	224	223	420	451
Life, accident and health benefits	6	9	15	18
Annuity and supplemental insurance acquisition expenses	48	42	101	77
Interest charges on borrowed money	23	19	44	37
Expenses of managed investment entities	51	36	92	71
Other expenses	88	81	173	160
Total costs and expenses	1,441	1,445	2,794	2,764
Earnings before income taxes	205	136	428	292
Provision for income taxes	60	73	128	125
Net earnings, including noncontrolling interests	145	63	300	167
Less: Net earnings attributable to noncontrolling interests	0	9	2	12
Net Earnings Attributable to Shareholders	$ 145	$ 54	$ 298	$ 155
Earnings Attributable to Shareholders per Common Share:
Basic (USD per share)	$ 1.64	$ 0.63	$ 3.40	$ 1.79
Diluted (USD per share)	$ 1.61	$ 0.62	$ 3.32	$ 1.76
Average number of Common Shares:
Basic (shares)	87.8	86.8	87.5	86.8
Diluted (shares)	89.8	88.4	89.6	88.4
Cash dividends per Common Share (USD per share)	$ 1.8125	$ 0.28	$ 2.125	$ 0.56
Supplemental disclosure of Realized gains on securities:
Realized gains before impairments	$ 17	$ 23	$ 26	$ 57
Losses on securities with impairment	(10)	(39)	(16)	(90)
Non-credit portion recognized in other comprehensive income (loss)	1	0	1	(1)
Impairment charges recognized in earnings	(9)	(39)	(15)	(91)
Total realized gains (losses) on securities	$ 8	$ (16)	$ 11	$ (34)