Segment Information (Reconciliation of Select Financial Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 13,464	$ 15,091
Total Assets	873,712		$ 896,552
Operating Segments
Segment Reporting Information [Line Items]
Revenues	13,334	13,648
Operating Segments | Total PGIM division | PGIM
Segment Reporting Information [Line Items]
Revenues	778	870
Total Assets	47,099		47,655
Operating Segments | Total U.S. Workplace Solutions division
Segment Reporting Information [Line Items]
Revenues	3,861	4,080
Total Assets	231,698		241,865
Operating Segments | Total U.S. Workplace Solutions division | Retirement
Segment Reporting Information [Line Items]
Revenues	2,437	2,639
Total Assets	187,992		198,153
Operating Segments | Total U.S. Workplace Solutions division | Group Insurance
Segment Reporting Information [Line Items]
Revenues	1,424	1,441
Total Assets	43,706		43,712
Operating Segments | Total U.S. Individual Solutions division
Segment Reporting Information [Line Items]
Revenues	2,678	2,717
Total Assets	271,730		285,112
Operating Segments | Total U.S. Individual Solutions division | Individual Annuities
Segment Reporting Information [Line Items]
Revenues	1,148	1,235
Total Assets	179,366		189,040
Operating Segments | Total U.S. Individual Solutions division | Individual Life
Segment Reporting Information [Line Items]
Revenues	1,530	1,482
Total Assets	92,364		96,072
Operating Segments | Assurance IQ division
Segment Reporting Information [Line Items]
Revenues	60	0
Total Assets	2,618		2,639
Operating Segments | Assurance IQ division | Assurance IQ
Segment Reporting Information [Line Items]
Revenues	60	0
Total Assets	2,618		2,639
Operating Segments | Total International Insurance division | International Insurance
Segment Reporting Information [Line Items]
Revenues	6,162	6,152
Total Assets	243,012		241,071
Operating Segments | Total Corporate and Other | Corporate and Other
Segment Reporting Information [Line Items]
Revenues	(205)	(171)
Total Assets	17,673		16,883
Operating Segments | Total Closed Block division | Closed Block division
Segment Reporting Information [Line Items]
Total Assets	59,882		61,327
Segment Reconciling Items | Realized investment gains (losses), net, and related adjustments
Segment Reporting Information [Line Items]
Revenues	(558)	(209)
Segment Reconciling Items | Charges related to realized investment gains (losses), net
Segment Reporting Information [Line Items]
Revenues	(62)	(72)
Segment Reconciling Items | Market experience updates
Segment Reporting Information [Line Items]
Revenues	(332)	0
Segment Reconciling Items | Segment Reconciling Items, Other Adjustments
Segment Reporting Information [Line Items]
Revenues	58	0
Segment Reconciling Items | Equity in earnings of operating joint ventures and earnings attributable to noncontrolling interests
Segment Reporting Information [Line Items]
Revenues	(12)	(38)
Segment Reconciling Items | Closed Block division
Segment Reporting Information [Line Items]
Revenues	677	1,374
Segment Reconciling Items | Other Divested and Run-off businesses
Segment Reporting Information [Line Items]
Revenues	359	388
Intersegment Eliminations | Total PGIM division | PGIM
Segment Reporting Information [Line Items]
Revenues	217	180
U.S. Businesses | Operating Segments
Segment Reporting Information [Line Items]
Revenues	6,599	$ 6,797
Total Assets	$ 506,046		$ 529,616