Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Available-for-sale securities, at fair value:
Fixed maturity securities (amortized cost)	$ 111,707	$ 111,058	$ 109,592	$ 107,587	$ 105,142	$ 107,459	$ 106,668	$ 105,866
Fixed maturity, ACL	22	18	12	20	19	17	9	14
Mortgage loans on real estate, fair value	$ 487	$ 495	$ 528	$ 537	$ 739	$ 792	$ 818	$ 874
Stockholders' Equity
Preferred stock - shares authorized (in shares)	10,000,000	10,000,000	10,000,000	10,000,000	10,000,000	10,000,000	10,000,000	10,000,000
Preferred stock - shares issued (in shares)	40,000
Preferred stock - shares outstanding (in shares)	40,000
Common stock - shares authorized (in shares)	800,000,000	800,000,000	800,000,000	800,000,000	800,000,000	800,000,000	800,000,000	800,000,000
Common stock - shares issued (in shares)	169,220,511	169,214,493	170,224,116	171,890,974	177,193,515	186,089,222	189,089,948	191,149,192
Common stock - shares outstanding (in shares)	169,220,511	169,214,493	170,224,116	171,890,974	177,193,515	186,089,222	189,089,948	191,149,192
Series C Preferred Stock [Member]
Stockholders' Equity
Preferred stock - shares authorized (in shares)	20,000
Preferred stock - shares issued (in shares)	20,000
Preferred stock - shares outstanding (in shares)	20,000
Series D Preferred Stock [Member]
Stockholders' Equity
Preferred stock - shares authorized (in shares)	20,000
Preferred stock - shares issued (in shares)	20,000
Preferred stock - shares outstanding (in shares)	20,000