Related Party Transactions (Narrative) (Details)	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) policy	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Asset administration fees	$ 1,546,000			$ 1,449,000	$ 3,111,000	$ 2,792,000
Commissions and fees	18,243,000			22,605,000	42,212,000	42,454,000
Other invested assets	107,524,000		$ 89,536,000		107,524,000		$ 89,536,000
Net investment income	20,683,000			19,472,000	37,648,000	38,213,000
Debt Outstanding	0				0
Short-term debt to affiliates	0		89,000		0		89,000
Contributed capital		$ 85,000,000	60,000,000
Dividends					0
Pruco Life
Related Party Transaction [Line Items]
Dividends							0
Prudential Insurance
Related Party Transaction [Line Items]
Stock option program plan expense	0.0			100,000	100,000	100,000
Deferred compensation program expense	0.0			100,000	300,000	400,000
Pension plan expense	400,000			600,000	1,000,000.0	1,100,000
Welfare plan expense	400,000			700,000	$ 1,100,000	1,400,000
Defined contribution plan employer matching contribution percent					4.00%
Defined contribution plan, cost recognized	200,000			300,000	$ 400,000	500,000
Number of Corporate Owned Life Insurance policies sold | policy					3
Prudential Financial
Related Party Transaction [Line Items]
Company’s share of corporate expenses	1,000,000			2,000,000	$ 3,000,000	4,000,000
Number of Corporate Owned Life Insurance policies sold | policy					1
Affiliated Entity
Related Party Transaction [Line Items]
Accrued interest receivable related to long-term notes receivable	0.0		0		$ 0.0		0
Revenue related to long-term notes receivables	0.0			100,000	100,000	100,000
Line of credit facility, maximum borrowing capacity	200,000,000				200,000,000
Short-term debt to affiliates			100,000				100,000
Interest expense related to loans payable	0.0			0	0.0	0
Affiliated Entity | PAD
Related Party Transaction [Line Items]
Commissions and fees	12,000,000			20,000,000	29,000,000	39,000,000
Affiliated Entity | ASTISI and PGIM Investments
Related Party Transaction [Line Items]
Asset administration fees	8,000,000			8,000,000	16,000,000	15,000,000
Affiliated Entity | PGIM
Related Party Transaction [Line Items]
Net investment income	700,000			600,000	1,300,000	1,100,000
Affiliated Entity | PGIM Investments, LLC [Member]
Related Party Transaction [Line Items]
Asset administration fees	1,000,000			1,000,000	3,000,000	3,000,000
Prudential Financial Joint Ventures
Related Party Transaction [Line Items]
Other invested assets	37,000,000				37,000,000
Net investment income	2,000,000.0			800,000	300,000	2,100,000
Prudential Insurance and Prudential Financial
Related Party Transaction [Line Items]
Life Insurance, Corporate or Bank Owned, amount	2,694,000,000		$ 2,743,000,000		2,694,000,000		$ 2,743,000,000
Fees related to Life Insurance, Corporate or Bank Owned, amount	6,000,000			$ 6,000,000	$ 14,000,000	$ 13,000,000
Concentration Risk, Percentage					10.00%
Maximum COLI Mortality Risk	$ 100,000				$ 100,000