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Income Taxes (Deferred Income Tax) (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Income Taxes [Line Items] |  |
Regulatory Liability Excess Deferred Tax | $ 606 | $ 602
OPEB | 163 | 217
Related to Uncertain Tax Positions | 71 | 142
Total Noncurrent Assets | 840 | 961
Plant-Related Items | 4,817 | 4,257
New Jersey Corporate Business Tax | 756 | 674
Leasing Activities | 307 | 384
Pension Costs | 111 | 123
AROs and NDT Fund | 196 | 233
Taxes Recoverable Through Future Rate (net) | 89 | 80
Deferred Tax Liabilities, Other | 12 | 171
Total Non-Current Liabilities | 6,288 | 5,922
Accumulated Deferred Investment Tax Credit | 265 | 279
Net Total Noncurrent Deferred Income Taxes and ITC | 5,713 | 5,240
Deferred Tax Liabilities, Net, Noncurrent | 5,448 | 4,961
PSE&G [Member] |  |
Income Taxes [Line Items] |  |
Regulatory Liability Excess Deferred Tax | 606 | 602
OPEB | 114 | 116
Total Noncurrent Assets | 720 | 718
Plant-Related Items | 3,622 | 3,311
New Jersey Corporate Business Tax | 486 | 378
Conservation Costs | 36 | 24
Pension Costs | 159 | 152
Taxes Recoverable Through Future Rate (net) | 89 | 80
Deferred Tax Liabilities, Other | 84 | 86
Total Non-Current Liabilities | 4,476 | 4,031
Accumulated Deferred Investment Tax Credit | 74 | 78
Net Total Noncurrent Deferred Income Taxes and ITC | 3,830 | 3,391
Deferred Tax Liabilities, Net, Noncurrent | 3,756 | 3,313
Power [Member] |  |
Income Taxes [Line Items] |  |
Contractual Liabilities & Environmental Costs | 9 | 12
Related to Uncertain Tax Positions | 60 | 45
Pension Costs | 52 | 40
Other | 98 | 93
Total Noncurrent Assets | 219 | 190
Plant-Related Items | 1,189 | 935
New Jersey Corporate Business Tax | 260 | 225
AROs and NDT Fund | 197 | 235
Total Non-Current Liabilities | 1,646 | 1,395
Accumulated Deferred Investment Tax Credit | 192 | 201
Net Total Noncurrent Deferred Income Taxes and ITC | 1,619 | 1,406
Deferred Tax Liabilities, Net, Noncurrent | $ 1,427 | $ 1,205

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