Schedule I - Condensed Financial Information, Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Net investment (income)	$ (349)	$ (355)	$ (1,035)	$ (1,036)
Total revenues	38,556	11,457	115,321	34,350
Operating expenses:
Selling, Genernal and Administrative Expense	3,413	2,872	10,096	8,454
Total benefits and expenses	36,433	10,325	108,805	30,749
Income from operations	2,123	1,132	6,516	3,601
Interest expense and other	(411)	(99)	(1,291)	(212)
Intercompany interest income (expense)	0	0	0	0
Realized investment (gains) losses	(51)	0	(84)	36
Income (loss) before income taxes	1,763	1,033	5,309	3,353
Income tax expense (benefit)	409	259	1,173	854
(Loss) of parent company	1,354	774	4,136	2,499
Equity in income from subsidiaries	0	0	0	0
Shareholders' net income	1,351	772	4,127	2,493
Shareholders' other comprehensive income (loss), net of tax:
Net unrealized appreciation (depreciation) on securities and derivatives	223	2	1,008	(431)
Net translation (losses) gains on foreign currencies	(128)	(29)	(192)	(136)
Postretirement benefits liability adjustment	12	13	37	31
Shareholders' other comprehensive income (loss)	107	(14)	853	(536)
Shareholders' comprehensive income (loss)	$ 1,458	$ 758	$ 4,980	$ 1,957