Equity (Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023		Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	[1]	$ (30,961)
Income tax benefit (expense)		151,234	$ 5,638		$ 106,197
Ending balance		(601,877)	(30,961)	[1]
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		(18,085)	(20,007)		(11,274)
Change in OCI before reclassifications		(4,595)	2,419		(9,337)
Amounts reclassified from AOCI		0	0		0
Income tax benefit (expense)		739	(497)		604
Ending balance		(21,941)	(18,085)		(20,007)
Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		(927,778)	(1,474,475)		306,331
Change in OCI before reclassifications		(416,996)	677,735		(2,249,609)
Amounts reclassified from AOCI		81,903	14,217		(4,428)
Income tax benefit (expense)		70,169	(145,255)		473,231
Ending balance		(1,192,702)	(927,778)		(1,474,475)
AOCI, Liability for Future Policy Benefit, Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		71,195	119,368		(125,809)
Change in OCI before reclassifications		58,676	(60,978)		310,351
Amounts reclassified from AOCI		0	0		0
Income tax benefit (expense)		(12,313)	12,805		(65,174)
Ending balance		117,558	71,195		119,368
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		843,707	1,365,049		227,206
Change in OCI before reclassifications		(441,138)	(659,927)		1,440,307
Amounts reclassified from AOCI		0	0		0
Income tax benefit (expense)		92,639	138,585		(302,464)
Ending balance		495,208	843,707		1,365,049
Total Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		(30,961)	(10,065)		396,454
Change in OCI before reclassifications		(804,053)	(40,751)		(508,288)
Amounts reclassified from AOCI		81,903	14,217		(4,428)
Income tax benefit (expense)		151,234	5,638		106,197
Ending balance		(601,877)	(30,961)		(10,065)
Cash flow hedges | Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		12,000	139,000
Ending balance		$ 111,000	$ 12,000		$ 139,000

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