Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Net investment income	$ 832	$ 880	$ 1,662	$ 2,470
Realized capital gains (losses)	440	197	682	1,183
Total revenues	11,500	11,069	32,773	33,203
Costs and expenses
Property and casualty insurance claims and claims expense	6,072	6,051	16,635	18,227
Shelter-in-Place Payback expense	0	0	948	0
Life contract benefits	727	513	1,725	1,521
Interest credited to contractholder funds	150	169	482	487
Amortization of deferred policy acquisition costs	1,492	1,425	4,242	4,151
Operating costs and expenses	1,380	1,414	4,230	4,174
Pension and other postretirement remeasurement (gains) losses	(71)	225	320	365
Restructuring and related charges	200	0	219	27
Amortization of purchased intangibles	31	32	88	96
Impairment of purchased intangibles	0	0	0	55
Interest expense	78	80	238	245
Total costs and expenses	10,059	9,909	29,127	29,348
Gain on disposition of operations	1	0	3	3
Income from operations before income tax expense	1,442	1,160	3,649	3,858
Income tax expense	289	229	697	784
Net income	1,153	931	2,952	3,074
Preferred stock dividends	27	42	89	103
Net income applicable to common shareholders	$ 1,126	$ 889	$ 2,863	$ 2,971
Earnings per common share
Net income available to common shareholders per common share - Basic (in dollars per share)	$ 3.62	$ 2.71	$ 9.11	$ 8.98
Weighted average common shares - Basic (in shares)	311.2	327.7	314.1	330.8
Net income available to common shareholders per common share - Diluted (in dollars per share)	$ 3.58	$ 2.67	$ 9.01	$ 8.85
Weighted average common shares - Diluted (in shares)	314.1	333.0	317.9	335.7
Property and casualty insurance premiums
Revenues
Premiums Earned, Net	$ 9,336	$ 9,094	$ 27,794	$ 26,882
Life premiums and contract charges
Revenues
Insurance premiums, commissions and fees	620	625	1,841	1,874
Other revenue
Revenues
Insurance premiums, commissions and fees	$ 272	$ 273	$ 794	$ 794