Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Net investment income	$ 844	$ 843	$ 2,454	$ 2,488
Realized capital gains and losses:
Total other-than-temporary impairment (“OTTI”) losses	(4)	(26)	(8)	(135)
OTTI losses reclassified (from) to other comprehensive income (“OCI”)	(1)	(2)	(2)	(2)
Net OTTI losses recognized in earnings	(5)	(28)	(10)	(137)
Sales and valuation changes on equity investments and derivatives	181	131	27	455
Total realized capital gains and losses	176	103	17	318
Total revenues	10,465	9,888	30,334	29,345
Costs and expenses
Property and casualty insurance claims and claims expense	5,817	5,545	16,758	16,650
Life contract benefits	498	456	1,485	1,416
Interest credited to contractholder funds	163	174	489	522
Amortization of deferred policy acquisition costs	1,317	1,200	3,886	3,545
Operating costs and expenses	1,534	1,446	4,296	4,065
Restructuring and related charges	16	14	65	77
Interest expense	82	83	251	251
Total costs and expenses	9,427	8,918	27,230	26,526
Gain on disposition of operations	1	1	4	15
Income from operations before income tax expense	1,039	971	3,108	2,834
Income tax expense	169	305	587	894
Net income	870	666	2,521	1,940
Preferred stock dividends	37	29	105	87
Net income applicable to common shareholders	$ 833	$ 637	$ 2,416	$ 1,853
Earnings per common share:
Net income available to common shareholders per common share - Basic (in dollars per share)	$ 2.41	$ 1.76	$ 6.91	$ 5.10
Weighted average common shares - Basic (in shares)	346.0	361.3	349.7	363.5
Net income available to common shareholders per common share - Diluted (in dollars per share)	$ 2.37	$ 1.74	$ 6.80	$ 5.02
Weighted average common shares - Diluted (in shares)	351.7	367.1	355.4	369.1
Cash dividends declared per common share (in dollars per share)	$ 0.46	$ 0.37	$ 1.38	$ 1.11
Property and casualty insurance premiums
Revenues
Other revenue	$ 8,595	$ 8,121	$ 25,341	$ 24,098
Life premiums and contract charges
Revenues
Other revenue	612	593	1,840	1,777
Other revenue
Revenues
Other revenue	$ 238	$ 228	$ 682	$ 664