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Income Taxes (Deferred Income Tax) (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Income Taxes [Line Items] |  |
Regulatory Liability Excess Deferred Tax | $ 539 | $ 606
OPEB | 151 | 163
Related to Uncertain Tax Positions | 97 | 71
Deferred Tax Asset, Interest Carryforward | 76 | 0
Deferred Tax Asset, Operating Leases | 64 | 0
Other | 128 | 0
Total Noncurrent Assets | 1,055 | 840
Plant-Related Items | 5,051 | 4,817
New Jersey Corporate Business Tax | 876 | 756
Leasing Activities | 284 | 307
Pension Costs | 98 | 111
Deferred Tax Liabilities, Operating Leases | 59 | 0
AROs and NDT Fund | 277 | 196
Taxes Recoverable Through Future Rate (net) | 108 | 89
Deferred Tax Liabilities, Other | 273 | 12
Total Non-Current Liabilities | 7,026 | 6,288
Accumulated Deferred Investment Tax Credit | 285 | 265
Net Total Noncurrent Deferred Income Taxes and ITC | 6,256 | 5,713
Deferred Tax Liabilities, Net, Noncurrent | 5,971 | 5,448
Public Service Electric and Gas Company |  |
Income Taxes [Line Items] |  |
Regulatory Liability Excess Deferred Tax | 539 | 606
OPEB | 97 | 114
Related to Uncertain Tax Positions | 42 | 0
Deferred Tax Asset, Operating Leases | 21 | 0
Other | 55 | 0
Total Noncurrent Assets | 754 | 720
Plant-Related Items | 3,754 | 3,622
New Jersey Corporate Business Tax | 588 | 486
Conservation Costs | 44 | 36
Pension Costs | 160 | 159
Deferred Tax Liabilities, Operating Leases | 21 | 0
Taxes Recoverable Through Future Rate (net) | 108 | 89
Deferred Tax Liabilities, Other | 183 | 84
Total Non-Current Liabilities | 4,858 | 4,476
Accumulated Deferred Investment Tax Credit | 85 | 74
Net Total Noncurrent Deferred Income Taxes and ITC | 4,189 | 3,830
Deferred Tax Liabilities, Net, Noncurrent | 4,104 | 3,756
PSEG Power LLC |  |
Income Taxes [Line Items] |  |
OPEB | 40 | 37
Contractual Liabilities & Environmental Costs | 7 | 9
Related to Uncertain Tax Positions | 72 | 60
Deferred Tax Asset, Interest Carryforward | 12 |
Deferred Tax Asset, Operating Leases | 15 | 0
Pension Costs | 61 | 52
Other | 30 | 61
Total Noncurrent Assets | 237 | 219
Plant-Related Items | 1,292 | 1,189
New Jersey Corporate Business Tax | 282 | 260
Deferred Tax Liabilities, Operating Leases | 15 |
AROs and NDT Fund | 278 | 197
Deferred Tax Liabilities, Other | 45 | 0
Total Non-Current Liabilities | 1,912 | 1,646
Accumulated Deferred Investment Tax Credit | 201 | 192
Net Total Noncurrent Deferred Income Taxes and ITC | 1,876 | 1,619
Deferred Tax Liabilities, Net, Noncurrent | $ 1,675 | $ 1,427

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