Consolidated Statements of Financial Position (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Fixed Maturities, Available-for-sale, at fair value (AFS), Allowance for Credit Losses	$ 2,339
Fixed maturities, available-for-sale, amortized cost	6,157,371	$ 5,283,266
Fixed maturities, trading, amortized cost	73,413	59,995
Equity securities, at cost	105,508	6,360
Commercial mtg and other loans, allowance for credit losses	4,552	1,768
Other invested assets, at fair value	$ 94,939	$ 87,456
Common stock, par value (in dollars per share)	$ 10	$ 10
Common stock, shares authorized	1,000,000	1,000,000
Common stock, shares issued	250,000	250,000
Common stock, shares outstanding	250,000	250,000