Rate Filings (Details) (PSE And G [Member], USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Apr. 30, 2015	Aug. 31, 2016	Mar. 31, 2015
Regulatory Assets And Liabilities [Line Items]
Supplemental Request for WNC Carryover Deficiency Revenues Recovery			$ 45
Subsequent Event [Member]
Regulatory Assets And Liabilities [Line Items]
Self Implementing Bill Credit per therm	0.28
BGSS Revenue Reduction	20
Scenario, Forecast [Member]
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		6
Scenario, Forecast [Member] | Electric Distribution [Member]
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 17