Policyholders' Liabilities (Guaranteed Minimum Crediting Rate) (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)		Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 69,628,318	$ 52,986,700	[1]	$ 41,912,536
1 - 50 bps above guaranteed minimum | Maximum
Policyholder Account Balance [Line Items]
Policyholder account balance, above guaranteed minimum crediting rate	50	50		50
1 - 50 bps above guaranteed minimum | Minimum
Policyholder Account Balance [Line Items]
Policyholder account balance, above guaranteed minimum crediting rate	1	1		1
51 - 150 bps above guaranteed minimum | Maximum
Policyholder Account Balance [Line Items]
Policyholder account balance, above guaranteed minimum crediting rate	150	150		150
51 - 150 bps above guaranteed minimum | Minimum
Policyholder Account Balance [Line Items]
Policyholder account balance, above guaranteed minimum crediting rate	51	51		51
Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholder account balance, above guaranteed minimum crediting rate	150	150		150
Fixed Annuities
Policyholder Account Balance [Line Items]
Policyholders’ account balances		$ 6,164,313		$ 3,575,823	$ 3,005,867
Variable Annuties
Policyholder Account Balance [Line Items]
Policyholders’ account balances		22,810,665		16,432,032	11,723,977
Variable / Universal Life
Policyholder Account Balance [Line Items]
Policyholders’ account balances		20,167,713		18,736,365	$ 18,762,548
Less than 1.00% | Fixed Annuities
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 1,037,125	$ 118,813		$ 0
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%		1.00%
Less than 1.00% | Fixed Annuities | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 249	$ 105		$ 0
Less than 1.00% | Fixed Annuities | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	3,103	337		0
Less than 1.00% | Fixed Annuities | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	11,939	994		0
Less than 1.00% | Fixed Annuities | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,021,834	117,377		0
Less than 1.00% | Variable Annuties
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 1,279,398	$ 1,733,642		$ 1,888,628
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%		1.00%
Less than 1.00% | Variable Annuties | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 128,748	$ 908,097		$ 1,008,763
Less than 1.00% | Variable Annuties | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	502,988	807,460		861,119
Less than 1.00% | Variable Annuties | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	647,480	18,083		18,744
Less than 1.00% | Variable Annuties | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	182	2		2
Less than 1.00% | Variable / Universal Life
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 180,380	$ 196,692		$ 11,902
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%		1.00%
Less than 1.00% | Variable / Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 3,167	$ 0		$ 11,902
Less than 1.00% | Variable / Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Less than 1.00% | Variable / Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Less than 1.00% | Variable / Universal Life | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	177,213	196,692		0
1.00% - 1.99% | Fixed Annuities
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 734,846	$ 874,784		$ 927,039
1.00% - 1.99% | Fixed Annuities | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%		1.99%
1.00% - 1.99% | Fixed Annuities | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%		1.00%
1.00% - 1.99% | Fixed Annuities | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 430,477	$ 487,191		$ 521,189
1.00% - 1.99% | Fixed Annuities | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	62,519	73,393		73,554
1.00% - 1.99% | Fixed Annuities | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	172,877	234,487		248,881
1.00% - 1.99% | Fixed Annuities | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	68,973	79,713		83,415
1.00% - 1.99% | Variable Annuties
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 418,465	$ 217,498		$ 246,774
1.00% - 1.99% | Variable Annuties | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%		1.99%
1.00% - 1.99% | Variable Annuties | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%		1.00%
1.00% - 1.99% | Variable Annuties | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 121,336	$ 214,377		$ 243,223
1.00% - 1.99% | Variable Annuties | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	294,635	2,061		2,257
1.00% - 1.99% | Variable Annuties | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	2,494	1,060		1,294
1.00% - 1.99% | Variable Annuties | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
1.00% - 1.99% | Variable / Universal Life
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 3,652,804	$ 3,317,734		$ 3,120,332
1.00% - 1.99% | Variable / Universal Life | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%		1.99%
1.00% - 1.99% | Variable / Universal Life | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%		1.00%
1.00% - 1.99% | Variable / Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 289,677	$ 201,121		$ 418,399
1.00% - 1.99% | Variable / Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
1.00% - 1.99% | Variable / Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,849,854	2,588,458		773,591
1.00% - 1.99% | Variable / Universal Life | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,513,273	528,155		1,928,342
2.00% - 2.99% | Fixed Annuities
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 1,335,411	$ 1,349,636		$ 208,420
2.00% - 2.99% | Fixed Annuities | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%		2.99%
2.00% - 2.99% | Fixed Annuities | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%		2.00%
2.00% - 2.99% | Fixed Annuities | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 302,520	$ 301,132		$ 208,420
2.00% - 2.99% | Fixed Annuities | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	459,748	469,276		0
2.00% - 2.99% | Fixed Annuities | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	557,349	562,347		0
2.00% - 2.99% | Fixed Annuities | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	15,794	16,881		0
2.00% - 2.99% | Variable Annuties
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 25,030	$ 31,529		$ 27,751
2.00% - 2.99% | Variable Annuties | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%		2.99%
2.00% - 2.99% | Variable Annuties | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%		2.00%
2.00% - 2.99% | Variable Annuties | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 17,039	$ 23,323		$ 26,778
2.00% - 2.99% | Variable Annuties | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	3,829	4,071		973
2.00% - 2.99% | Variable Annuties | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	4,162	4,135		0
2.00% - 2.99% | Variable Annuties | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
2.00% - 2.99% | Variable / Universal Life
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 4,652,202	$ 4,523,671		$ 4,391,725
2.00% - 2.99% | Variable / Universal Life | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%		2.99%
2.00% - 2.99% | Variable / Universal Life | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%		2.00%
2.00% - 2.99% | Variable / Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 30,500	$ 28,061		$ 32,651
2.00% - 2.99% | Variable / Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,535,762	1,445,439		121,200
2.00% - 2.99% | Variable / Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	2,695,823	2,789,520		2,413,571
2.00% - 2.99% | Variable / Universal Life | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	390,117	260,651		1,824,303
3.00% - 4.00% | Fixed Annuities
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 1,914,875	$ 29,131		$ 38,195
3.00% - 4.00% | Fixed Annuities | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%		4.00%
3.00% - 4.00% | Fixed Annuities | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%		3.00%
3.00% - 4.00% | Fixed Annuities | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 1,894,646	$ 29,131		$ 38,195
3.00% - 4.00% | Fixed Annuities | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	6,114	0		0
3.00% - 4.00% | Fixed Annuities | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	10,896	0		0
3.00% - 4.00% | Fixed Annuities | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	3,219	0		0
3.00% - 4.00% | Variable Annuties
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 821,176	$ 913,231		$ 1,073,205
3.00% - 4.00% | Variable Annuties | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%		4.00%
3.00% - 4.00% | Variable Annuties | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%		3.00%
3.00% - 4.00% | Variable Annuties | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 819,316	$ 903,953		$ 1,070,958
3.00% - 4.00% | Variable Annuties | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,860	9,245		2,247
3.00% - 4.00% | Variable Annuties | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	33		0
3.00% - 4.00% | Variable Annuties | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
3.00% - 4.00% | Variable / Universal Life
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 6,948,038	$ 7,281,490		$ 6,964,283
3.00% - 4.00% | Variable / Universal Life | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%		4.00%
3.00% - 4.00% | Variable / Universal Life | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%		3.00%
3.00% - 4.00% | Variable / Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 4,149,638	$ 3,956,631		$ 4,737,864
3.00% - 4.00% | Variable / Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,716,374	2,217,133		3,510
3.00% - 4.00% | Variable / Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,082,026	1,107,726		2,093,511
3.00% - 4.00% | Variable / Universal Life | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		129,398
Greater than 4.00% | Fixed Annuities
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 0	$ 0		$ 0
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%		4.00%
Greater than 4.00% | Fixed Annuities | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 0	$ 0		$ 0
Greater than 4.00% | Fixed Annuities | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Greater than 4.00% | Fixed Annuities | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Greater than 4.00% | Fixed Annuities | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Greater than 4.00% | Variable Annuties
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 1,978	$ 2,046		$ 2,172
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%		4.00%
Greater than 4.00% | Variable Annuties | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 1,978	$ 2,046		$ 2,172
Greater than 4.00% | Variable Annuties | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Greater than 4.00% | Variable Annuties | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Greater than 4.00% | Variable Annuties | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Greater than 4.00% | Variable / Universal Life
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 2,095,235	$ 2,136,137		$ 2,145,123
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%		4.00%
Greater than 4.00% | Variable / Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 2,095,235	$ 2,136,137		$ 2,145,123
Greater than 4.00% | Variable / Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Greater than 4.00% | Variable / Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Greater than 4.00% | Variable / Universal Life | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	0	0		0
Total | Fixed Annuities
Policyholder Account Balance [Line Items]
Policyholders’ account balances	5,022,257	2,372,364		1,173,654
Total | Fixed Annuities | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	2,627,892	817,559		767,804
Total | Fixed Annuities | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	531,484	543,006		73,554
Total | Fixed Annuities | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	753,061	797,828		248,881
Total | Fixed Annuities | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,109,820	213,971		83,415
Total | Variable Annuties
Policyholder Account Balance [Line Items]
Policyholders’ account balances	2,546,047	2,897,946		3,238,530
Total | Variable Annuties | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	1,088,417	2,051,796		2,351,894
Total | Variable Annuties | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	803,312	822,837		866,596
Total | Variable Annuties | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	654,136	23,311		20,038
Total | Variable Annuties | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	182	2		2
Total | Variable / Universal Life
Policyholder Account Balance [Line Items]
Policyholders’ account balances	17,528,659	17,455,724		16,633,365
Total | Variable / Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	6,568,217	6,321,950		7,345,939
Total | Variable / Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	3,252,136	3,662,572		124,710
Total | Variable / Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	5,627,703	6,485,704		5,280,673
Total | Variable / Universal Life | Greater than 150bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholders’ account balances	$ 2,080,603	$ 985,498		$ 3,882,043

[1] Amounts reflect revision to prior period Financial Statements. See Note 17 for additional information.