Related Party Transactions (Affiliated Asset Transfers) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Related Party Transaction [Line Items]
Realized investment gains (losses)	$ 784,107	$ 76,608
Affiliated Entity | PALAC - June 2021 - Purchase - Equities
Related Party Transaction [Line Items]
Fair Value	40,284
Book Value	40,284
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | Prudential Insurance - September 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	64,374
Book Value	59,642
APIC, Net of Tax Increase/(Decrease)	(3,739)
Realized investment gains (losses)	0
Affiliated Entity | Prudential Insurance - September 2021 -Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	37,887
Book Value	35,264
APIC, Net of Tax Increase/(Decrease)	2,073
Realized investment gains (losses)	0
Affiliated Entity | Hirakata LLC - September 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	13,944
Book Value	13,944
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | Prudential Retirement Insurance and Annuity Co - September 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	120,256
Book Value	120,256
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | Prudential Retirement Insurance and Annuity Co - September 2021 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	173,590
Book Value	166,427
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	7,163
Affiliated Entity | Prudential Insurance - September 2021 - Purchase - Commercial Mortgage and Other Loans
Related Party Transaction [Line Items]
Fair Value	45,358
Book Value	42,127
APIC, Net of Tax Increase/(Decrease)	(2,553)
Realized investment gains (losses)	0
Affiliated Entity | Prudential Insurance - September 2021 - Sale - Commercial Mortgage and Other Loans
Related Party Transaction [Line Items]
Fair Value	22,796
Book Value	21,780
APIC, Net of Tax Increase/(Decrease)	802
Realized investment gains (losses)	0
Affiliated Entity | Prudential Retirement Insurance and Annuity Co - September 2021 - Purchase - Commercial Mortgage and Other Loans
Related Party Transaction [Line Items]
Fair Value	29,483
Book Value	29,483
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | Prudential Retirement Insurance and Annuity Co - September 2021 - Sale - Commercial Mortgage and Other Loans
Related Party Transaction [Line Items]
Fair Value	51,005
Book Value	47,020
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	3,985
Affiliated Entity | Prudential Insurance - September 2021 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	600
Book Value	494
APIC, Net of Tax Increase/(Decrease)	(84)
Realized investment gains (losses)	0
Affiliated Entity | Prudential Insurance - September 2021 - Sale - Derivatives
Related Party Transaction [Line Items]
Fair Value	335
Book Value	175
APIC, Net of Tax Increase/(Decrease)	127
Realized investment gains (losses)	0
Affiliated Entity | Prudential Retirement Insurance and Annuity Co - September 2021 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	(1,243)
Book Value	(1,243)
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | Prudential Retirement Insurance and Annuity Co - September 2021 - Sale - Derivatives
Related Party Transaction [Line Items]
Fair Value	2,846
Book Value	770
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	2,076
Affiliated Entity | Prudential Arizona Reinsurance Universal Co - November 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	41,021
Book Value	41,021
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | PALAC - November 2021 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	1,112
Book Value	1,112
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | PALAC - December 2021 - Transfer In - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,037,320
Book Value	2,037,320
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | Prudential Universal Reinsurance Co - December 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	48,041
Book Value	48,041
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | PALAC - December 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	57,087
Book Value	57,087
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | PALAC - December 2021 - Transfer In - Commercial Mortgage and Other Loans
Related Party Transaction [Line Items]
Fair Value	517,309
Book Value	517,309
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | Prudential Insurance - December 2021 - Distributed Capital - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	166,676
Book Value	166,676
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | Prudential Retirement Insurance & Annuity Co - December 2021 - Sale - Derivatives
Related Party Transaction [Line Items]
Fair Value	31,567
Book Value	0
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	31,567
Affiliated Entity | Prudential Retirement Insurance and Annuity Co- December 2021 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	73,572
Book Value	73,572
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | PALAC - December 2021 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	8,455
Book Value	8,455
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | PALAC - January 2022 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	4,432
Book Value	4,432
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | PALAC - January 2022 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	404
Book Value	404
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	0
Affiliated Entity | PALAC - February 2022 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	128,909
Book Value	128,909
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses)	$ 0