Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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- Definition

Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation.

+ References

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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph b

-URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5728-111685

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5747-111685

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Variable Interest Entities (VIEs) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Variable Interest Entity [Line Items]
Operating Revenues	$ 2,773us-gaap_Revenues	$ 2,641us-gaap_Revenues	$ 2,249us-gaap_Revenues	$ 3,223us-gaap_Revenues	$ 2,318us-gaap_Revenues	$ 2,554us-gaap_Revenues	$ 2,310us-gaap_Revenues	$ 2,786us-gaap_Revenues	$ 10,886us-gaap_Revenues	$ 9,968us-gaap_Revenues	$ 9,781us-gaap_Revenues
Operation and Maintenance									3,150	2,887	2,632
PSE&G [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	16				16				16	16
Operating Revenues	1,531	1,655	1,435	2,145	1,571	1,666	1,423	1,995	6,766	6,655	6,626
Operation and Maintenance									1,558	1,639	1,508
Long Island ServCo [Member]
Variable Interest Entity [Line Items]
Operating Revenues									389
Operation and Maintenance									$ 389