CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)		Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Fixed maturities, amortized cost		$ 19,512,000,000	$ 19,111,000,000
Available-for-sale: Fixed maturities, allowance for credit losses	[1]	13,000,000
Mortgage loans, allowance for loan losses		27,000,000	17,000,000
Investments, allowance for credit losses		7,000,000	$ 4,000,000
Reinsurance recoverables, allowance for credit loss	[1]	$ 7,000,000
Common stock, par value (in dollars per share)		$ 30	$ 30
Common stock, shares authorized (in shares)		100,000	100,000
Common stock, shares issued (in shares)		100,000	100,000
Common stock, shares outstanding (in shares)		100,000	100,000

[1] Prior to January 1, 2020, the allowance for credit losses is not applicable to Available-for-Sale securities and Reinsurance recoverables. See Notes 2, 3, 6 and 7 for more information.