CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues
Property-liability insurance premiums	$ 7,723	$ 7,426
Life and annuity premiums and contract charges	566	537
Net investment income	731	850
Realized capital gains and losses:
Total other-than-temporary impairment (“OTTI”) losses	(91)	(53)
OTTI losses reclassified to (from) other comprehensive income	10	4
Net OTTI losses recognized in earnings	(81)	(49)
Sales and other realized capital gains and losses	(68)	188
Total realized capital gains and losses	(149)	139
Total revenues	8,871	8,952
Costs and expenses
Property-liability insurance claims and claims expense	5,684	4,993
Life and annuity contract benefits	455	441
Interest credited to contractholder funds	190	199
Amortization of deferred policy acquisition costs	1,129	1,070
Operating costs and expenses	982	1,090
Restructuring and related charges	5	4
Interest expense	73	73
Costs and expenses	8,518	7,870
Gain (loss) on disposition of operations	2	(1)
Income from operations before income tax expense	355	1,081
Income tax expense	109	404
Net income	246	677
Preferred stock dividends	29	29
Net income applicable to common shareholders	$ 217	$ 648
Earnings per common share:
Net income available to common shareholders per common share - Basic (in dollars per share)	$ 0.57	$ 1.56
Weighted average common shares - Basic (in shares)	378.1	415.8
Net income available to common shareholders per common share - Diluted (in dollars per share)	$ 0.57	$ 1.53
Weighted average common shares - Diluted (in shares)	382.9	422.6
Cash dividends declared per common share (in dollars per share)	$ 0.33	$ 0.30