Income Taxes (Possible Decrease In Total Unrecognized Tax Benefits Including Interest) (Details) $ in Millions	Dec. 31, 2021 USD ($)
Income Taxes [Line Items]
Possible Decrease in Total Unrecognized Tax Benefits including Interest in next twelve months	$ 25
Public Service Electric and Gas Company
Income Taxes [Line Items]
Possible Decrease in Total Unrecognized Tax Benefits including Interest in next twelve months	$ 15

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319

Name:	us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant