Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019
Cash paid for:
Interest		$ 23	$ 22
Income taxes		12	78
Non-cash investing and financing activities:
Equity financing associated with the acquisition of F&G	$ 577		0
Change in proceeds of sales of investments available for sale receivable in period		(25)	(6)
Change in purchases of investments available for sale payable in period		(70)	4
Change in treasury stock purchases payable in period		0	0
Lease liabilities recognized in exchange for lease right-of-use assets		13	15
Remeasurement of lease liabilities		$ 30	$ 42