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Consolidated Statements Of Stockholders' Equity (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Other Comprehensive Income (Loss), tax | $ (40) | $ (34) |  | $ 23
PSE&G [Member] |  |  |  |
Other Comprehensive Income (Loss), tax | 0 | 0 | $ 0 |
Power [Member] |  |  |  |
Other Comprehensive Income (Loss), tax | $ (32) | $ 23 |  | $ 121

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- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=79507043&loc=d3e39076-109324 + Details
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