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v3.6.0.2

Income Taxes (Narrative) (Detail) | 12 Months Ended
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Dec. 31, 2016
Income Taxes [Line Items] |
Bonus depreciation for tax purposes | 50.00%
Current ITC rate for qualified property | 30.00%
Bonus Depreciation for Tax Purposes 2018 | 40.00%
Bonus Depreciation for Tax Purposes 2019 | 30.00%
2020 ITC rate for qualified property | 26.00%
2021 ITC rate for qualified property | 22.00%
PSEG [Member] |
Income Taxes [Line Items] |
Federal income tax rate | 35.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes | 9.00%

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