Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Net investment income	$ 942	$ 824	$ 1,590	$ 1,610
Realized capital gains and losses:
Total other-than-temporary impairment (“OTTI”) losses	(12)	(4)	(28)	(4)
OTTI losses reclassified (from) to other comprehensive income (OCI)	(3)	0	(1)	(1)
Net OTTI losses recognized in earnings	(15)	(4)	(29)	(5)
Sales and valuation changes on equity investments and derivatives	339	(21)	1,015	(154)
Total realized capital gains and losses	324	(25)	986	(159)
Total revenues	11,144	10,099	22,134	19,869
Costs and expenses
Property and casualty insurance claims and claims expense	6,356	5,777	12,176	10,906
Life contract benefits	511	483	1,008	987
Interest credited to contractholder funds	156	165	318	326
Amortization of deferred policy acquisition costs	1,362	1,296	2,726	2,569
Operating costs and expenses	1,380	1,358	2,760	2,661
Pension and other postretirement remeasurement gains and losses	125	(7)	140	7
Restructuring and related charges	9	23	27	42
Amortization of purchased intangibles	32	23	64	45
Impairment of purchased intangibles	55	0	55	0
Interest expense	82	86	165	169
Total costs and expenses	10,068	9,204	19,439	17,712
Gain on disposition of operations	2	2	3	3
Income from operations before income tax expense	1,078	897	2,698	2,160
Income tax expense	227	180	555	437
Net income	851	717	2,143	1,723
Preferred stock dividends	30	39	61	68
Net income applicable to common shareholders	$ 821	$ 678	$ 2,082	$ 1,655
Earnings per common share
Net income available to common shareholders per common share - Basic (in dollars per share)	$ 2.47	$ 1.94	$ 6.27	$ 4.71
Weighted average common shares - Basic (in shares)	332.0	349.2	332.3	351.6
Net income available to common shareholders per common share - Diluted (in dollars per share)	$ 2.44	$ 1.91	$ 6.17	$ 4.63
Weighted average common shares - Diluted (in shares)	336.9	354.6	337.2	357.2
Property and casualty insurance premiums
Revenues
Other revenue	$ 8,986	$ 8,460	$ 17,788	$ 16,746
Life premiums and contract charges
Revenues
Other revenue	621	612	1,249	1,228
Other revenue
Revenues
Other revenue	$ 271	$ 228	$ 521	$ 444