Related Party Transactions (Narrative) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Policy charges and fee income									$ 2,171,278,000	$ 2,209,579,000	$ 1,755,224,000
Other invested assets					$ 0					0
Net investment income									402,808,000	422,809,000	338,370,000
Contributed capital									0	0	860,573,000
Prudential Insurance
Related Party Transaction [Line Items]
Stock option program plan expense									100,000	100,000	100,000
Deferred compensation program expense									500,000	900,000	800,000
Pension plan expense									2,000,000	1,000,000	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									$ 700,000	500,000	500,000
Affiliated Entity
Related Party Transaction [Line Items]
Corporate Expenses									15,000,000	14,000,000	10,000,000
Accrued interest receivable related to long-term notes	$ 300,000				200,000				300,000	200,000
Revenue related to long-tern notes receivable									400,000	700,000	900,000
Interest expense related to loans payable									58,000,000	66,000,000	53,000,000
Affiliated Entity | PAIST
Related Party Transaction [Line Items]
Allocated sub-lease rental income										0	0
Affiliated Entity | PAD
Related Party Transaction [Line Items]
Policy charges and fee income									122,000,000	109,000,000	108,000,000
Affiliated Entity | ASTISI and Prudential Investments
Related Party Transaction [Line Items]
Revenue administrative sharing agreement									105,000,000	111,000,000	112,000,000
Affiliated Entity | PGIM
Related Party Transaction [Line Items]
Net investment income									12,000,000	13,000,000	11,000,000
Prudential Financial Joint Ventures
Related Party Transaction [Line Items]
Other invested assets	228,000,000				111,000,000				228,000,000	111,000,000
Net investment income									1,000,000	9,000,000	5,000,000
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	$ 8,421,955,000
Return of capital	$ 225,000,000	$ 250,000,000	$ 250,000,000	$ 300,000,000	$ 650,000,000	$ 200,000,000	$ 100,000,000	$ 1,140,000,000