Consolidated Statement of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Property and casualty insurance net earned premiums	$ 1,267	$ 1,159	$ 3,354	$ 3,184
Life, accident and health net earned premiums	6	6	17	18
Net investment income	471	433	1,366	1,267
Realized gains (losses) on:
Securities	(12)	2	(1)	(32)
Subsidiaries	0	0	0	2
Income of managed investment entities:
Investment income	54	48	155	141
Gain on change in fair value of assets/liabilities	1	11	12	9
Other income	48	46	154	172
Total revenues	1,835	1,705	5,057	4,761
Costs and Expenses:
Property and casualty insurance: Losses and loss adjustment expenses	995	765	2,239	2,033
Property and casualty insurance: Commissions and other underwriting expenses	357	356	1,062	1,038
Annuity benefits	215	189	635	640
Life, accident and health benefits	6	8	21	26
Annuity and supplemental insurance acquisition expenses	55	54	156	131
Interest charges on borrowed money	21	19	65	56
Expenses of managed investment entities	45	38	137	109
Other expenses	112	98	285	258
Total costs and expenses	1,806	1,527	4,600	4,291
Earnings before income taxes	29	178	457	470
Provision for income taxes	18	65	146	190
Net earnings, including noncontrolling interests	11	113	311	280
Less: Net earnings attributable to noncontrolling interests	0	4	2	16
Net Earnings Attributable to Shareholders	$ 11	$ 109	$ 309	$ 264
Earnings Attributable to Shareholders per Common Share:
Basic (USD per share)	$ 0.13	$ 1.25	$ 3.52	$ 3.04
Diluted (USD per share)	$ 0.13	$ 1.23	$ 3.44	$ 2.98
Average number of Common Shares:
Basic (shares)	88.1	86.9	87.7	86.8
Diluted (shares)	90.0	88.5	89.7	88.4
Cash dividends per Common Share (USD per share)	$ 0.3125	$ 0.28	$ 2.4375	$ 0.84
Supplemental disclosure of Realized gains on securities:
Realized gains before impairments	$ 26	$ 18	$ 52	$ 75
Losses on securities with impairment	(38)	(16)	(54)	(106)
Non-credit portion recognized in other comprehensive income (loss)	0	0	1	(1)
Impairment charges recognized in earnings	(38)	(16)	(53)	(107)
Total realized gains (losses) on securities	$ (12)	$ 2	$ (1)	$ (32)