Separate Accounts (Separate Account Liabilities) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Separate Account, Liability [Roll Forward]
Balance, beginning of period	$ 114,051,246	$ 149,797,828
Deposits	1,577,513	1,532,986
Investment performance	9,719,802	(25,652,963)
Policy charges	(1,576,563)	(1,693,624)
Surrenders and withdrawals	(4,776,319)	(4,772,960)
Benefit payments	(150,697)	(169,961)
Net transfers (to) from separate account	(1,040,549)	(284,135)
Other	35,722	34,948
Balance, end of period	117,840,155	118,792,119
Cash surrender value	113,562,296	114,386,497
Variable Annuities
Separate Account, Liability [Roll Forward]
Balance, beginning of period	91,785,448	123,977,624
Deposits	200,961	392,364
Investment performance	7,184,460	(21,112,961)
Policy charges	(1,171,455)	(1,315,427)
Surrenders and withdrawals	(4,561,633)	(4,594,845)
Benefit payments	(43,056)	(35,662)
Net transfers (to) from separate account	(4,995)	(157,771)
Other	5,405	6,241
Balance, end of period	93,395,135	97,159,563
Cash surrender value	92,036,034	95,384,568
Variable Life
Separate Account, Liability [Roll Forward]
Balance, beginning of period	22,265,798	25,820,204
Deposits	1,376,552	1,140,622
Investment performance	2,535,342	(4,540,002)
Policy charges	(405,108)	(378,197)
Surrenders and withdrawals	(214,686)	(178,115)
Benefit payments	(107,641)	(134,299)
Net transfers (to) from separate account	(1,035,554)	(126,364)
Other	30,317	28,707
Balance, end of period	24,445,020	21,632,556
Cash surrender value	21,526,262	$ 19,001,929
Policy loan funding to an affiliated irrevocable trust | Variable Life
Separate Account, Liability [Roll Forward]
Net transfers (to) from separate account	$ (900,000)