Segment Information (Revenues and Asset Management Revenues) (Details) - USD ($) $ in Millions	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, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Insurance Agency Management Fee									$ 4,239	$ 4,100	$ 4,127
Total revenues	$ 19,223	$ 15,105	$ 15,388	$ 15,091	$ 18,432	$ 16,148	$ 14,655	$ 13,757	64,807	62,992	59,689
PGIM | PGIM | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total revenues									777	731	717
Domestic operations
Segment Reporting Information [Line Items]
Total revenues									40,868	40,603	36,573
Foreign operations
Segment Reporting Information [Line Items]
Total revenues									23,939	22,389	23,116
Foreign operations, Japan
Segment Reporting Information [Line Items]
Total revenues									19,626	19,125	19,589
Foreign operations, Korea
Segment Reporting Information [Line Items]
Total revenues									1,638	1,495	1,567
Management Service, Base
Segment Reporting Information [Line Items]
Insurance Agency Management Fee									3,489	3,438	3,328
Management Service, Incentive
Segment Reporting Information [Line Items]
Insurance Agency Management Fee									169	56	194
Financial Service, Other
Segment Reporting Information [Line Items]
Insurance Agency Management Fee									$ 581	$ 606	$ 605