Business and Basis of Presentation (Market Risk Benefit, Activity) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Variable Annuties
Market Risk Benefit [Roll Forward]
Net liabilities	$ 4,550,625	$ 8,884,362	$ (12,032)	$ 13,577,543
Variable Annuties | As Originally Reported
Market Risk Benefit [Roll Forward]
Net liabilities				$ 13,227,814
Variable Annuties | Additional insurance reserves to be reclassed to market risk benefits, prior to transition, excluding amounts related to unrealized investment gains and losses
Market Risk Benefit [Roll Forward]
Net liabilities			534,422
Variable Annuties | Total liability prior to transition
Market Risk Benefit [Roll Forward]
Net liabilities			13,762,236
Variable Annuties | Change in reserve basis to market risk benefits framework
Market Risk Benefit [Roll Forward]
Net liabilities			(184,693)
Variable Annuties | Market risk benefits after transition, at current non-performance risk value
Market Risk Benefit [Roll Forward]
Net liabilities			13,577,543
Variable Annuties | Less: Reinsured market risk benefits
Market Risk Benefit [Roll Forward]
Net liabilities			13,589,575
Variable Annuties | Market risk benefits after transition, at contract inception non-performance risk value
Market Risk Benefit [Roll Forward]
Net liabilities			13,577,543
Variable Annuties | Cumulative change in non-performance risk
Market Risk Benefit [Roll Forward]
Net liabilities			722,837
Individual Variable | Market risk benefits after transition, at contract inception non-performance risk value | Retirement Strategies
Market Risk Benefit [Roll Forward]
Net liabilities			$ 14,300,380