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Variable Interest Entities (VIEs) (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating Revenues | $ 2,090 | $ 2,450 | $ 1,905 | $ 2,616 | $ 2,278 | $ 2,688 | $ 2,314 | $ 3,135 | $ 9,061 | $ 10,415 | $ 10,886
Operation and Maintenance |  |  |  |  |  |  |  |  | 3,008 | 2,978 | 3,150
PSE&G [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating Revenues | $ 1,475 | $ 1,684 | $ 1,350 | $ 1,712 | $ 1,402 | $ 1,766 | $ 1,466 | $ 2,002 | 6,221 | 6,636 | 6,766
Operation and Maintenance |  |  |  |  |  |  |  |  | 1,475 | 1,560 | 1,558
Long Island ServCo [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating Revenues |  |  |  |  |  |  |  |  | 410 | 375 | 389
Operation and Maintenance |  |  |  |  |  |  |  |  | $ 410 | $ 375 | $ 389

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- Definition 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). + References 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=63488584&loc=d3e20235-122688 + Details
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- Definition Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation. + References 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 210.5-03.2(b)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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