Separate Accounts (Separate Account Liabilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Separate Account, Liability [Roll Forward]
Balance, beginning of period	$ 119,188,485	$ 114,051,246	$ 149,797,828
Deposits	4,114,974	3,186,458	2,933,695
Investment performance	13,052,608	16,530,506	(25,870,874)
Policy charges	(3,133,536)	(3,126,398)	(3,280,999)
Surrenders and withdrawals	(14,278,004)	(10,035,327)	(8,821,162)
Benefit payments	(351,709)	(300,033)	(340,726)
Net transfers (to) from general account	(481,062)	(1,190,696)	(420,021)
Other	31,500	72,729	53,505
Balance, end of period	118,143,256	119,188,485	114,051,246
Cash surrender value	113,918,263	114,901,916	109,783,645
Variable Annuties
Separate Account, Liability [Roll Forward]
Balance, beginning of period	92,383,121	91,785,447	123,977,624
Deposits	601,236	440,707	658,695
Investment performance	8,395,586	12,219,777	(21,600,783)
Policy charges	(2,210,261)	(2,296,859)	(2,513,831)
Surrenders and withdrawals	(13,827,431)	(9,687,372)	(8,481,231)
Benefit payments	(66,029)	(73,791)	(62,586)
Net transfers (to) from general account	(100,193)	(15,121)	(206,269)
Other	7,026	10,333	13,828
Balance, end of period	85,183,055	92,383,121	91,785,447
Cash surrender value	84,325,382	91,201,190	90,208,083
Variable Life
Separate Account, Liability [Roll Forward]
Balance, beginning of period	26,805,364	22,265,799	25,820,204
Deposits	3,513,738	2,745,751	2,275,000
Investment performance	4,657,022	4,310,729	(4,270,091)
Policy charges	(923,275)	(829,539)	(767,168)
Surrenders and withdrawals	(450,573)	(347,955)	(339,931)
Benefit payments	(285,680)	(226,242)	(278,140)
Net transfers (to) from general account	(380,869)	(1,175,575)	(213,752)
Other	24,474	62,396	39,677
Balance, end of period	32,960,201	26,805,364	22,265,799
Cash surrender value	$ 29,592,881	23,700,726	$ 19,575,562
Policy loan funding to an affiliated irrevocable trust | Variable Life
Separate Account, Liability [Roll Forward]
Net transfers (to) from general account		$ (900,000)