Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Short-Term and Long-Term Debt (Short-Term Debt) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Short-term Debt [Line Items]
Short-term debt	$ 1,490		$ 2,451
Weighted average interest rate on outstanding short-term debt	1.90%		2.41%
Commercial paper
Short-term Debt [Line Items]
Short-term debt	$ 578		$ 742
Weighted average maturity of outstanding commercial paper, in days	5 days	12 days
Long-term debt
Short-term Debt [Line Items]
Short-term debt	$ 904		1,656
Borrowings due overnight \| Commercial paper
Short-term Debt [Line Items]
Short-term debt	250		301
Daily average outstanding \| Commercial paper
Short-term Debt [Line Items]
Short-term debt	1,853		1,554
Prudential Financial
Short-term Debt [Line Items]
Short-term debt	677		1,115
Prudential Financial \| Commercial paper
Short-term Debt [Line Items]
Short-term debt	25		15
Prudential Funding, LLC \| Commercial paper
Short-term Debt [Line Items]
Short-term debt	553		727
Mortgages
Short-term Debt [Line Items]
Short-term debt	0		53
Construction Loan Payable
Short-term Debt [Line Items]
Short-term debt	252		57
Line of Credit
Short-term Debt [Line Items]
Short-term debt	8		0
Senior notes
Short-term Debt [Line Items]
Short-term debt	$ 652		$ 1,100