Consolidated Statements of Financial Position (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Fixed Maturities, Available-for-sale, at fair value (AFS), Allowance for Credit Losses	$ 4,149	$ 2,339
Fixed maturities, available-for-sale, amortized cost	12,737,749	6,157,371
Fixed maturities, trading, amortized cost	3,319,660	73,413
Equity securities, at cost	106,174	105,508
Commercial mtg and other loans, allowance for credit losses	5,951	4,552
Other invested assets, at fair value	$ 348,004	$ 94,939
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