Business and Basis of Presentation (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) subsidiary	Jun. 30, 2021 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number Of Subsidiaries | subsidiary			1
Realized investment gains (losses), net	$ 714,709	$ (122,502)	$ 1,498,816	$ (45,894)
Income (loss) from operations before income taxes and equity in earnings of operating joint venture	506,174	$ (26,269)	476,482	$ 31,812
Out of period adjustment
Income (loss) from operations before income taxes and equity in earnings of operating joint venture	32,000		50,000
Out of period adjustment | Universal and variable life products | Variable life and annuities
Adjustments related to reserves	$ 48,000		$ 48,000