Schedule I - Condensed Financial Information, Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Net investment (income)	$ (340)	$ (352)	$ (686)	$ (681)
Total revenues	38,819	11,480	76,765	22,893
Operating expenses:
Selling, Genernal and Administrative Expense	3,380	2,837	6,683	5,582
Total benefits and expenses	36,656	10,319	72,372	20,424
Income from operations	2,163	1,161	4,393	2,469
Interest expense and other	(428)	(56)	(880)	(113)
Intercompany interest income (expense)	0	0	0	0
Realized investment (gains) losses	(23)	3	(33)	36
Income (loss) before income taxes	1,758	1,102	3,546	2,320
Income tax expense (benefit)	348	294	764	595
(Loss) of parent company	1,410	808	2,782	1,725
Equity in income from subsidiaries	0	0	0	0
Shareholders' net income	1,408	806	2,776	1,721
Shareholders' other comprehensive income (loss), net of tax:
Net unrealized appreciation (depreciation) on securities and derivatives	343	(149)	785	(433)
Net translation (losses) gains on foreign currencies	(40)	(152)	(64)	(107)
Postretirement benefits liability adjustment	14	5	25	18
Shareholders' other comprehensive income (loss)	317	(296)	746	(522)
Shareholders' comprehensive income (loss)	$ 1,725	$ 510	$ 3,522	$ 1,199