Related Party Transactions (Narrative) (Details)	3 Months Ended
	Mar. 31, 2020 USD ($) policy	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Commissions and fees	$ 139,919,000		$ 139,189,000
Other invested assets	462,257,000	$ 429,558,000
Net investment income	79,581,000		93,250,000
Fee income from revenue sharing agreement	4,388,000		3,657,000
Debt Outstanding	0	0
Contributed Capital	0
Dividends	0	250,000,000
Prudential Insurance
Related Party Transaction [Line Items]
Contributed Capital		6,000,000
Prudential Insurance
Related Party Transaction [Line Items]
Stock option program plan expense	200,000		100,000
Deferred compensation program expense	3,000,000		3,000,000
Pension plan expense	5,000,000		5,000,000
Welfare plan expense	$ 6,000,000		6,000,000
Defined contribution plan, employer matching contribution, percent (up to)	4.00%
Defined contribution plan, cost recognized	$ 2,000,000		2,000,000
Number of Corporate Owned Life Insurance policies sold | policy	5
Prudential Insurance and Prudential Financial
Related Party Transaction [Line Items]
Life Insurance, Corporate or Bank Owned, amount	$ 3,741,000,000	4,339,000,000
Fees related to Life Insurance, Corporate or Bank Owned, amount	14,000,000		13,000,000
Maximum amount of mortality risk	3,500,000
Prudential Financial
Related Party Transaction [Line Items]
Company's share of corporate expenses	$ 19,000,000		17,000,000
Number of Corporate Owned Life Insurance policies sold | policy	1
Affiliated Entity
Related Party Transaction [Line Items]
Accrued interest receivable related to long-tern notes receivable	$ 1,000,000	1,000,000
Revenues related to long-term notes receivable	1,000,000		1,000,000
Line of credit facility, maximum borrowing capacity	2,200,000,000
Interest expense related to loans payable	500,000		200,000
Affiliated Entity | PAD
Related Party Transaction [Line Items]
Commissions and fees	169,000,000		179,000,000
Affiliated Entity | ASTISI and PGIM Investments
Related Party Transaction [Line Items]
Fee income from revenue sharing agreement	85,000,000		81,000,000
Affiliated Entity | PGIM Investments
Related Party Transaction [Line Items]
Fee income from revenue sharing agreement	3,000,000		2,000,000
Affiliated Entity | PGIM
Related Party Transaction [Line Items]
Net investment income	3,000,000		3,000,000
Prudential Financial Joint Ventures
Related Party Transaction [Line Items]
Other invested assets	89,000,000	$ 96,000,000
Net investment income	$ 10,000,000		$ 5,000,000