Condensed Financial Information (Parent Company) (Condensed Balance Sheets Insets) (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Balance Sheet Statements, Captions [Line Items]
Amortized cost of fixed maturity securities available-for-sale	$ 86,565	$ 86,129
Fixed maturity securities, allowance for credit losses	79	21	$ 6
Mortgage loans, allowance for credit losses	178	137
Premiums, reinsurance and other, allowance for credit losses	$ 3	$ 3
Common stock, par value	$ 25,000	$ 25,000
Common stock, shares authorized	4,000	4,000
Common stock, shares, issued	3,000	3,000
Common stock, shares, outstanding	3,000	3,000
Parent Company
Condensed Balance Sheet Statements, Captions [Line Items]
Amortized cost of fixed maturity securities available-for-sale	$ 72,741	$ 73,144
Fixed maturity securities, allowance for credit losses	78	20
Mortgage loans, allowance for credit losses	172	129
Premiums, reinsurance and other, allowance for credit losses	$ 3	$ 3
Common stock, par value	$ 25,000	$ 25,000
Common stock, shares authorized	4,000	4,000
Common stock, shares, issued	3,000	3,000
Common stock, shares, outstanding	3,000	3,000