Related Party Transactions (Affiliated Asset Transfers) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	[1]	Jun. 30, 2025	Jun. 30, 2024	[1]	Dec. 31, 2024
Related Party Transaction [Line Items]
Additional Paid in Capital							$ 4,923,299
Realized investment gains (losses), net	$ (819,364)	$ 804,748		$ (925,738)	$ 801,943
Affiliated Entity | PARU - January 2024 - Transfer in - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	1,598,161			1,598,161
Book Value	1,598,161			1,598,161
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PARU - January 2024 - Transfer in - Fixed Maturities 1
Related Party Transaction [Line Items]
Fair Value	778,745			778,745
Book Value	778,745			778,745
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PURC - January 2024 - Transfer in - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,155,560			2,155,560
Book Value	2,155,560			2,155,560
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | GUL Re - January 2024 - Transfer in - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	1,685,582			1,685,582
Book Value	1,685,582			1,685,582
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | GUL Re - January 2024 - Transfer in - Fixed Maturities 1
Related Party Transaction [Line Items]
Fair Value	4,976			4,976
Book Value	4,976			4,976
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PURE - January 2024 - Transfer out - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	1,598,161			1,598,161
Book Value	1,598,161			1,598,161
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PURE - January 2024 - Transfer out - Fixed Maturities 1
Related Party Transaction [Line Items]
Fair Value	778,745			778,745
Book Value	778,745			778,745
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PURE - January 2024 - Transfer out - Fixed Maturities 2
Related Party Transaction [Line Items]
Fair Value	2,155,560			2,155,560
Book Value	2,155,560			2,155,560
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PURE - January 2024 - Transfer out - Fixed Maturities 3
Related Party Transaction [Line Items]
Fair Value	1,685,582			1,685,582
Book Value	1,685,582			1,685,582
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PURE - January 2024 - Transfer out - Fixed Maturities 4
Related Party Transaction [Line Items]
Fair Value	4,976			4,976
Book Value	4,976			4,976
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Ironbound - January 2024 - Purchase - Other Invested Assets
Related Party Transaction [Line Items]
Fair Value	60,414			60,414
Book Value	60,414			60,414
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 1, Ltd. - February 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	18,428			18,428
Book Value	18,858			18,858
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(430)
Affiliated Entity | Windhill CLO 2, Ltd - February 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	19,652			19,652
Book Value	20,057			20,057
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(405)
Affiliated Entity | PAR Term - February 2024 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	43,084			43,084
Book Value	43,084			43,084
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 1, Ltd. - March 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	10,148			10,148
Book Value	10,387			10,387
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(239)
Affiliated Entity | Windhill CLO 2, Ltd. - March 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	14,763			14,763
Book Value	15,091			15,091
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(328)
Affiliated Entity | Prudential Insurance - March 2024 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	198,804			198,804
Book Value	206,285			206,285
Additional Paid in Capital	5,910			5,910
Realized investment gains (losses), net				0
Affiliated Entity | PAR U - March 2024 - Transfer in - Other Invested Assets
Related Party Transaction [Line Items]
Fair Value	188,500			188,500
Book Value	188,500			188,500
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PURE - March 2024 - Transfer out - Other Invested Assets
Related Party Transaction [Line Items]
Fair Value	188,500			188,500
Book Value	188,500			188,500
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 1, Ltd. - April 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,261			2,261
Book Value	2,300			2,300
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(39)
Affiliated Entity | Windhill CLO 2, Ltd. - May 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	14,034			14,034
Book Value	14,415			14,415
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(381)
Affiliated Entity | Windhill CLO 1, Ltd. - June 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,045			2,045
Book Value	2,100			2,100
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(55)
Affiliated Entity | Windhill CLO 2, Ltd. - June 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	23,342			23,342
Book Value	23,743			23,743
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(401)
Affiliated Entity | PAR U - June 2024 - Transfer in - Other Invested Assets
Related Party Transaction [Line Items]
Fair Value	326			326
Book Value	326			326
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PURE - June 2024 - Transfer out - Other Invested Assets
Related Party Transaction [Line Items]
Fair Value	326			326
Book Value	326			326
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PAR U - June 2024 - Purchase - Commercial Mortgage and Othe Loans
Related Party Transaction [Line Items]
Fair Value	12,555			12,555
Book Value	12,555			12,555
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 2, Ltd. - July 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	53,462			53,462
Book Value	54,628			54,628
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(1,166)
Affiliated Entity | Windhill CLO 2, Ltd. - July 2024 - Sale - Fixed Maturities1
Related Party Transaction [Line Items]
Fair Value	6,579			6,579
Book Value	6,695			6,695
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(116)
Affiliated Entity | Windhill CLO 1, Ltd. - July 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,136			2,136
Book Value	2,200			2,200
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(64)
Affiliated Entity | PAR U - July 2024 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	17,402			17,402
Book Value	17,402			17,402
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Prudential Insurance - July 2024 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	22,655			22,655
Book Value	23,433			23,433
Additional Paid in Capital	614			614
Realized investment gains (losses), net				0
Affiliated Entity | PAR U - July 2024 - Purchase - Fixed Maturities1
Related Party Transaction [Line Items]
Fair Value	1,239			1,239
Book Value	1,239			1,239
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PAR U - July 2024 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	2,975			2,975
Book Value	2,975			2,975
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 2, Ltd. - August 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	21,929			21,929
Book Value	22,500			22,500
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(571)
Affiliated Entity | Windhill CLO 1, Ltd. - August 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	13,650			13,650
Book Value	14,100			14,100
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(450)
Affiliated Entity | PAR U - August 2024 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	46,742			46,742
Book Value	46,742			46,742
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PAR U - August 2024 - Purchase - Fixed Maturities1
Related Party Transaction [Line Items]
Fair Value	4,793			4,793
Book Value	4,793			4,793
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Prudential Insurance - August 2024 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	35,872			35,872
Book Value	35,085			35,085
Additional Paid in Capital	(621)			(621)
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 2, Ltd. - September 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	57,613			57,613
Book Value	57,613			57,613
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 2, Ltd. - September 2024 - Sale - Fixed Maturities1
Related Party Transaction [Line Items]
Fair Value	24,575			24,575
Book Value	24,911			24,911
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(336)
Affiliated Entity | Prudential Insurance - September 2024 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	44,773			44,773
Book Value	43,632			43,632
Additional Paid in Capital	(901)			(901)
Realized investment gains (losses), net				0
Affiliated Entity | Hirakata - October 2024 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	21,229			21,229
Book Value	21,229			21,229
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Hirakata - October 2024 - Purchase - Fixed Maturities1
Related Party Transaction [Line Items]
Fair Value	3,901			3,901
Book Value	3,901			3,901
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | PAR U - October 2024 - Transfer in - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	6,615,438			6,615,438
Book Value	6,615,438			6,615,438
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 3, Ltd. - October 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	232,036			232,036
Book Value	235,610			235,610
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(3,574)
Affiliated Entity | Windhill CLO 2, Ltd. - October 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	5,824			5,824
Book Value	5,899			5,899
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(75)
Affiliated Entity | Windhill CLO 2, Ltd. - October 2024 - Sale - Fixed Maturities1
Related Party Transaction [Line Items]
Fair Value	14,690			14,690
Book Value	14,959			14,959
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(269)
Affiliated Entity | Windhill CLO 1, Ltd. - October 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	3,038			3,038
Book Value	3,100			3,100
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(62)
Affiliated Entity | PAR U - October 2024 - Transfer in - Equities
Related Party Transaction [Line Items]
Fair Value	6,120			6,120
Book Value	6,120			6,120
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 3, Ltd. - November 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	17,409			17,409
Book Value	17,518			17,518
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(109)
Affiliated Entity | Windhill CLO 3, Ltd. - December 2024 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	38,020			38,020
Book Value	38,537			38,537
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(517)
Affiliated Entity | Windhill CLO 3, Ltd. - December 2024 - Sale - Short-term Investments1
Related Party Transaction [Line Items]
Fair Value	2,882			2,882
Book Value	2,905			2,905
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(23)
Affiliated Entity | Prudential Insurance - December 2024 - Contributed Capital - Equities
Related Party Transaction [Line Items]
Fair Value	415,696			415,696
Book Value	416,265			416,265
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 2, Ltd. - January 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,738			2,738
Book Value	2,800			2,800
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(62)
Affiliated Entity | Windhill CLO 3, Ltd. - January 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	17,046			17,046
Book Value	17,363			17,363
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(317)
Affiliated Entity | Windhill CLO 1, Ltd. - January 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,152			2,152
Book Value	2,200			2,200
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(48)
Affiliated Entity | PAR U - February 2025 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	417,169			417,169
Book Value	417,169			417,169
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 2, Ltd. - February 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	7,482			7,482
Book Value	7,600			7,600
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(118)
Affiliated Entity | Windhill CLO 3, Ltd. - February 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	17,172			17,172
Book Value	17,410			17,410
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(238)
Affiliated Entity | Windhill CLO 1, Ltd. - February 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	9,784			9,784
Book Value	9,900			9,900
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(116)
Affiliated Entity | Prudential Insurance - February 2025 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	100,033			100,033
Book Value	101,147			101,147
Additional Paid in Capital	880			880
Realized investment gains (losses), net				0
Affiliated Entity | Prudential Insurance - March 2025 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	226,726			226,726
Book Value	260,396			260,396
Additional Paid in Capital	26,599			26,599
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 3, Ltd. - March 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	9,019			9,019
Book Value	9,144			9,144
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(125)
Affiliated Entity | Windhill CLO 1, Ltd. - March 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	8,469			8,469
Book Value	8,500			8,500
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(31)
Affiliated Entity | Windhill CLO 1, Ltd. - March 2025 - Sale - Fixed Maturities1
Related Party Transaction [Line Items]
Fair Value	10,184			10,184
Book Value	10,301			10,301
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(117)
Affiliated Entity | Windhill CLO 1, Ltd. - March 2025 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	921			921
Book Value	921			921
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 1, Ltd. - April 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	21,646			21,646
Book Value	22,003			22,003
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(357)
Affiliated Entity | Windhill CLO 2, Ltd. - April 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	8,597			8,597
Book Value	8,646			8,646
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(49)
Affiliated Entity | Windhill CLO 3, Ltd. - April 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	33,528			33,528
Book Value	34,110			34,110
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(582)
Affiliated Entity | Windhill CLO 1, Ltd. - April 2025 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	24			24
Book Value	24			24
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Prudential Insurance - April 2025 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	51,030			51,030
Book Value	53,646			53,646
Additional Paid in Capital	2,066			2,066
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 1, Ltd. - May 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	9,254			9,254
Book Value	9,388			9,388
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(134)
Affiliated Entity | Windhill CLO 2, Ltd. - May 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	14,667			14,667
Book Value	14,792			14,792
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(125)
Affiliated Entity | Windhill CLO 4, Ltd. - May 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	235,316			235,316
Book Value	237,464			237,464
Additional Paid in Capital	0			0
Realized investment gains (losses), net				(2,148)
Affiliated Entity | Prudential Insurance - May 2025 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	24,037			24,037
Book Value	24,000			24,000
Additional Paid in Capital	(29)			(29)
Realized investment gains (losses), net				0
Affiliated Entity | PARCC - May 2025 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	103,549			103,549
Book Value	103,549			103,549
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Prudential Insurance - May 2025 - Transfer in - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	207,870			207,870
Book Value	207,870			207,870
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 2, Ltd. - June 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	500			500
Book Value	500			500
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 3, Ltd. - June 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,608			2,608
Book Value	2,608			2,608
Additional Paid in Capital	0			0
Realized investment gains (losses), net				0
Affiliated Entity | Windhill CLO 4, Ltd. - June 2025 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	19,136			19,136
Book Value	19,351			19,351
Additional Paid in Capital	$ 0			0
Realized investment gains (losses), net				$ (215)

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