CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)		Sep. 30, 2020		Dec. 31, 2019
Statement of Financial Position [Abstract]
Fixed maturities, amortized cost		$ 20,338,000,000		$ 19,111,000,000
Available-for-sale: Fixed maturities, allowance for credit losses		13,000,000	[1]	0	[2]
Mortgage loans, allowance for loan losses		28,000,000		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.

[2] Prior to January 1, 2020, credit losses on Available-for-Sale securities were not recorded in an allowance but were recorded as a reduction of the book value of the security if the security was other-than-temporarily impaired. There is no adoption impact due to the prospective transition for Available-for-Sale securities.