Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Condensed Balance Sheet Statements, Captions [Line Items]
Fixed maturities, available-for-sale, at fair value (amortized cost of $39,640 and $40,078, and ACL of $32 and $0)	$ 39,640	$ 40,078
Fixed maturities, available-for-sale, at fair value (amortized cost of $39,640 and $40,078, and ACL of $32 and $0)	32	0
Mortgage loans (net of ACL of $43 and $0)	43	0
Premiums receivable and agents' balances (net of ACL of $183 and $145)	183	145
Reinsurance recoverables (net of allowance for uncollectible reinsurance of $111 and $114)	$ 54	$ 48
Preferred stock, 13,800 shares issued	13,800,000	13,800,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock aggregate liquidation preference	$ 345	$ 345
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,500,000,000	1,500,000,000
Common stock 384,923,222 shares issued at March 31, 2020 and December 31, 2019	384,923,222	384,923,222
Treasury stock, at cost — 26,824,475 and 25,352,977 shares	26,824,475	25,352,977
Uncollectible reinsurance
Condensed Balance Sheet Statements, Captions [Line Items]
Reinsurance recoverables (net of allowance for uncollectible reinsurance of $111 and $114)	$ 111	$ 114