Consolidated Statement of Earnings (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Property and casualty insurance net earned premiums	$ 709	$ 640	$ 1,396	$ 1,243
Life, accident and health net earned premiums	28	105	58	210
Net investment income	332	329	658	646
Realized gains (losses) on:
Securities	41	16	98	60
Subsidiaries	0	(1)	0	(1)
Income (loss) of managed investment entities:
Investment income	32	32	66	61
Loss on change in fair value of assets/liabilities	(28)	(21)	(36)	(50)
Other income	25	24	47	42
Total revenues	1,139	1,124	2,287	2,211
Costs and Expenses:
Property and casualty insurance losses and loss adjustment expenses	430	363	823	707
Property and casualty insurance commissions and other underwriting expenses	260	232	511	443
Annuity benefits	120	147	254	277
Life, accident and health benefits	38	82	78	172
Annuity and supplemental insurance acquisition expenses	52	47	88	92
Interest charges on borrowed money	18	19	36	38
Expenses of managed investment entities	24	20	46	39
Other expenses	71	78	150	161
Total costs and expenses	1,013	988	1,986	1,929
Earnings before income taxes	126	136	301	282
Provision for income taxes	49	52	111	110
Net earnings, including noncontrolling interests	77	84	190	172
Less: Net earnings (loss) attributable to noncontrolling interests	(33)	(15)	(40)	(40)
Net Earnings Attributable to Shareholders	110	99	230	212
Earnings Attributable to Shareholders per Common Share:
Basic (in dollars per share)	$ 1.23	$ 1.02	$ 2.57	$ 2.18
Diluted (in dollars per share)	$ 1.20	$ 1.01	$ 2.52	$ 2.15
Average number of Common Shares:
Basic (in shares)	89.6	96.4	89.5	97.0
Diluted (in shares)	91.5	98.0	91.3	98.7
Cash dividends per Common Share (in dollars per share)	$ 0.195	$ 0.175	$ 0.39	$ 0.35
Supplemental disclosure of Realized gains on securities:
Realized gains before impairments	42	23	99	71
Losses on securities with impairment	(1)	(7)	(1)	(12)
Non-credit portion recognized in other comprehensive income (loss)		0		1
Impairment charges recognized in earnings	(1)	(7)	(1)	(11)
Total realized gains on securities	$ 41	$ 16	$ 98	$ 60