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Other Income And Deductions (Schedule Of Other Deductions) (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Components of Other Deductions [Roll Forward] |  |  |  |
NDT Fund Realized Losses and Expenses |  | $ 32 | $ 40 | $ 45
Other |  | 59 | 27 | 57
Total Other Deductions |  | 91 | 67 | 102
PSE&G [Member] |  |  |  |
Components of Other Deductions [Roll Forward] |  |  |  |
NDT Fund Realized Losses and Expenses |  | 0 | 0 | 0
Other |  | 5 | 4 | 4
Total Other Deductions |  | 5 | 4 | 4
Power [Member] |  |  |  |
Components of Other Deductions [Roll Forward] |  |  |  |
NDT Fund Realized Losses and Expenses |  | 32 | 40 | 45
Other |  | 24 | 17 | 27
Total Other Deductions |  | 56 | 57 | 72
Other [Member] |  |  |  |
Components of Other Deductions [Roll Forward] |  |  |  |
NDT Fund Realized Losses and Expenses | [1] | 0 | 0 | 0
Other | [1] | 30 | 6 | 26
Total Other Deductions | [1] | $ 30 | $ 6 | $ 26
[1] | Other consists of activity at PSEG (as parent company), Energy Holdings, Services, PSEG LI and intercompany eliminations.

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