Related Party Transactions (Narrative) (Details) - USD ($)	3 Months Ended					12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2021
Related Party Transaction [Line Items]
Commissions and fees	$ 96,844,000				$ 507,583,000
Investment expense	4,595,000				6,996,000
Other invested assets	464,773,000	$ 94,079,000				$ 94,079,000
Net investment income	99,058,000				139,259,000
Fee income from revenue sharing agreement	20,341,000				103,521,000
Dividend to Parent					192,000,000
Pruco Life
Related Party Transaction [Line Items]
Long-term debt	0	0				0
Prudential Insurance
Related Party Transaction [Line Items]
Stock option program plan expense	0				0
Deferred compensation program expense	0				700,000
Pension plan expense	0				2,300,000
Welfare plan expense	$ 0				1,100,000
Defined contribution plan employer matching contribution percent	4.00%
Defined contribution plan, cost recognized	$ 0				900,000
Affiliated Entity
Related Party Transaction [Line Items]
Interest expense related to loans payable	0				4,000,000
Affiliated Entity | PAD
Related Party Transaction [Line Items]
Commissions and fees	29,000,000				120,000,000
Affiliated Entity | ASTISI and PGIM Investments
Related Party Transaction [Line Items]
Fee income from revenue sharing agreement	22,000,000				23,000,000
Affiliated Entity | PGIM
Related Party Transaction [Line Items]
Investment expense	4,000,000				6,000,000
Prudential Financial Joint Venture
Related Party Transaction [Line Items]
Other invested assets	0	0				0
Net investment income	0				4,000,000
Prudential Financial
Related Party Transaction [Line Items]
Company's share of corporate expenses (benefits)	9,000,000				8,000,000
Line of credit facility, maximum borrowing capacity	9,000,000,000
PAI
Related Party Transaction [Line Items]
Contributed capital	0					$ 0
Return of capital	$ 306,000,000		$ 3,813,000,000
Dividend to Parent		$ 451,000,000		$ 188,000,000	$ 192,000,000