Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Available-for-sale securities, at fair value:
Fixed maturity securities (amortized cost)	$ 105,866	$ 104,174
Fixed maturity, ACL	14	13
Mortgage loans on real estate, fair value	$ 874	$ 832
Stockholders' Equity
Preferred stock - shares authorized (in shares)	10,000,000	10,000,000
Common stock - shares authorized (in shares)	800,000,000	800,000,000
Common stock - shares issued (in shares)	191,149,192	192,329,691
Common stock - shares outstanding (in shares)	191,149,192	192,329,691

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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