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), net	$ 480,925	$ 3,129,136
Affiliated Entity | Prudential Insurance - April 2021 Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	200,873
Book Value	200,873
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Prudential Insurance - April 2021 -Purchase - Commercial Mortgage Loan
Related Party Transaction [Line Items]
Fair Value	176,904
Book Value	176,904
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Vantage Casualty Insurance Co - June 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	14,662
Book Value	14,662
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Prudential Insurance - June 2021 - Sale - Equities
Related Party Transaction [Line Items]
Fair Value	3,050
Book Value	3,013
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	37
Affiliated Entity | Pruco Life - June 2021 - Sale - Equities
Related Party Transaction [Line Items]
Fair Value	40,284
Book Value	38,026
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	2,258
Affiliated Entity | Passaic Fund LLC - June 2021 - Transfer Out - Other Invested Assets
Related Party Transaction [Line Items]
Fair Value	12,350
Book Value	12,350
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Passaic Fund LLC - July 2021 - Transfer Out - Other Invested Assets
Related Party Transaction [Line Items]
Fair Value	195,776
Book Value	195,926
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	(150)
Affiliated Entity | Prudential Insurance - September 2021 -Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,104
Book Value	2,104
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Prudential Insurance - September 2021 -Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	11,788
Book Value	10,844
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	944
Affiliated Entity | Prudential Retirement Insurance and Annuity Company - September 2021 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	26,086
Book Value	24,349
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	1,737
Affiliated Entity | Prudential Retirement Insurance and Annuity Company - September 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	35,311
Book Value	35,311
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Prudential Insurance - September 2021 Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	71
Book Value	71
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Prudential Retirement Insurance and Annuity Company - September 2021 - Purchase - Derivatives
Related Party Transaction [Line Items]
Fair Value	(991)
Book Value	(991)
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Prudential Financial - October 2021 - Sale - Equities
Related Party Transaction [Line Items]
Fair Value	10,000
Book Value	10,000
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Pruco Life- November 2021 - Sale - Derivatives
Related Party Transaction [Line Items]
Fair Value	1,112
Book Value	0
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	1,112
Affiliated Entity | Prudential Arizona Reinsurance - November 2021 - Purchase - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	55,304
Book Value	55,304
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Pruco Life - December 2021 - Transfer Out - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	2,037,619
Book Value	1,934,118
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	103,501
Affiliated Entity | Pruco Life - December 2021 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	57,087
Book Value	56,977
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	110
Affiliated Entity | Prudential Financial - December 2021 - Dividend - 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), net	0
Affiliated Entity | Prudential Financial - December 2021 - Sale - Commercial Mortgage Loans
Related Party Transaction [Line Items]
Fair Value	144,465
Book Value	138,020
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	6,445
Affiliated Entity | Prudential Financial - December 2021 - Purchase - Commercial Mortgage Loan
Related Party Transaction [Line Items]
Fair Value	184,525
Book Value	184,525
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Pruco Life - December 2021 - Transfer Out - Commercial Mortgage Loan
Related Party Transaction [Line Items]
Fair Value	538,152
Book Value	517,309
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	20,843
Affiliated Entity | Pruco Life - December 2021 - Sale - Derivatives
Related Party Transaction [Line Items]
Fair Value	8,455
Book Value	2,345
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	6,110
Affiliated Entity | Prudential Financial - January 2022 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	4,432
Book Value	4,942
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	(510)
Affiliated Entity | Pruco Life - January 2022 - Sale - Commercial Mortgage Loan
Related Party Transaction [Line Items]
Fair Value	29,215
Book Value	29,544
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	(329)
Affiliated Entity | Pruco Life - January 2022 - Sale - Derivatives
Related Party Transaction [Line Items]
Fair Value	404
Book Value	404
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	0
Affiliated Entity | Pruco Life - February 2022 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	128,909
Book Value	138,478
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	(9,569)
Affiliated Entity | Prudential Financial - March 2022 - Sale - Fixed Maturities
Related Party Transaction [Line Items]
Fair Value	32,541
Book Value	33,463
APIC, Net of Tax Increase/(Decrease)	0
Realized investment gains (losses), net	$ (922)