Related Party Transactions (Narrative) (Details) - USD ($)	3 Months Ended											12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Policy charges and fee income												$ 2,081,046,000	$ 2,171,278,000	$ 2,209,579,000
Net investment income												551,548,000	402,808,000	422,809,000
Prudential Insurance
Related Party Transaction [Line Items]
Stock option program plan expense												100,000	100,000	100,000
Deferred compensation program expense												600,000	500,000	900,000
Pension plan expense												2,000,000	2,000,000	1,000,000
Welfare plan expense												$ 2,000,000	2,000,000	2,000,000
Defined contribution plan employer matching contribution percent												4.00%
Defined contribution plan, cost recognized												$ 900,000	700,000	500,000
Affiliated Entity
Related Party Transaction [Line Items]
Corporate Expenses												25,000,000	15,000,000	14,000,000
Accrued interest receivable related to long-term notes	$ 0.0				$ 300,000							0.0	300,000
Revenue related to long-tern notes receivable												100,000	400,000	700,000
Interest expense related to loans payable												107,000,000	58,000,000	66,000,000
Affiliated Entity | PAD
Related Party Transaction [Line Items]
Policy charges and fee income												97,000,000	122,000,000	109,000,000
Affiliated Entity | ASTISI and Prudential Investments
Related Party Transaction [Line Items]
Revenue administrative sharing agreement												96,000,000	105,000,000	111,000,000
Affiliated Entity | PGIM
Related Party Transaction [Line Items]
Net investment income												14,000,000	12,000,000	13,000,000
Prudential Financial Joint Ventures
Related Party Transaction [Line Items]
Other invested assets	391,000,000				228,000,000							391,000,000	228,000,000
Net investment income												17,000,000	1,000,000	9,000,000
Prudential Financial
Related Party Transaction [Line Items]
Line of credit facility, maximum borrowing capacity	9,000,000,000											9,000,000,000
PAI
Related Party Transaction [Line Items]
Contributed capital												$ 0	$ 0	$ 0
Return of capital	$ 241,000,000	$ 245,000,000	$ 247,000,000	$ 245,000,000	$ 225,000,000	$ 250,000,000	$ 250,000,000	$ 300,000,000	$ 650,000,000	$ 200,000,000	$ 100,000,000