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Guarantees Of Debt (Schedule Of Financial Statements Of Guarantors) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Operating Revenues | $ 2,316 | $ 2,016 | $ 5,296 | $ 4,834 |  |  |  |
Operating Expenses | 2,156 | 1,605 | 4,350 | 3,591 |  |  |  |
Operating Income (Loss) | 160 | 411 | 946 | 1,243 |  |  |  |
Equity Earnings (Losses) of Subsidiaries | 5 | 5 | 7 | 7 |  |  |  |
Net Gains (Losses) on Trust Investments | 39 | 8 | 167 | (14) |  |  |  |
Other Income (Deductions) | 33 | 34 | 66 | 66 |  |  |  |
Non-Operating Pension and OPEB Credits (Costs) | 33 | 19 | 66 | 38 |  |  |  |
Interest Expense | (137) | (111) | (270) | (214) |  |  |  |
Income Tax Benefit (Expense) | 20 | (97) | (129) | (299) |  |  |  |
Net Income | 153 | 269 | 853 | 827 |  |  |  |
Net Cash Provided By (Used In) Operating Activities |  |  | 1,824 | 1,633 |  |  |  |
Net Cash Provided By (Used In) Investing Activities |  |  | (1,622) | (2,027) |  |  |  |
Net Cash Provided By (Used In) Financing Activities |  |  | (286) | 190 |  |  |  |
Current Assets | 3,156 |  | 3,156 |  |  | $ 3,507 |  |
Property, Plant and Equipment, net | 34,877 |  | 34,877 |  |  | 34,363 |  |
Noncurrent Assets | 8,247 |  | 8,247 |  |  | 7,456 |  |
Total Assets | 46,280 |  | 46,280 |  |  | 45,326 |  |
Current Liabilities | 3,982 |  | 3,982 |  |  | 4,935 |  |
Noncurrent Liabilities | 13,243 |  | 13,243 |  |  | 12,846 |  |
Long-Term Debt | 14,301 |  | 14,301 |  |  | 13,168 |  |
Member's Equity | 14,754 | 14,158 | 14,754 | 14,158 | $ 14,814 | 14,377 | $ 14,104 | $ 13,847
TOTAL LIABILITIES AND CAPITALIZATION | 46,280 |  | 46,280 |  |  | 45,326 |  |
PSEG Power [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Operating Revenues | 1,083 | 767 | 2,499 | 2,170 |  |  |  |
Operating Expenses | 1,169 | 725 | 2,284 | 1,799 |  |  |  |
Operating Income (Loss) | (86) | 42 | 215 | 371 |  |  |  |
Equity Earnings (Losses) of Subsidiaries | 5 | 5 | 7 | 7 |  |  |  |
Net Gains (Losses) on Trust Investments | 38 | 8 | 164 | (14) |  |  |  |
Other Income (Deductions) | 15 | 13 | 28 | 24 |  |  |  |
Non-Operating Pension and OPEB Credits (Costs) | 3 | 3 | 6 | 7 |  |  |  |
Interest Expense | (26) | (11) | (51) | (18) |  |  |  |
Income Tax Benefit (Expense) | 11 | (19) | (113) | (102) |  |  |  |
Net Income | (40) | 41 | 256 | 275 |  |  |  |
Net Cash Provided By (Used In) Operating Activities |  |  | 1,150 | 869 |  |  |  |
Net Cash Provided By (Used In) Investing Activities |  |  | (714) | (1,095) |  |  |  |
Net Cash Provided By (Used In) Financing Activities |  |  | (444) | 214 |  |  |  |
Current Assets | 1,567 |  | 1,567 |  |  | 1,507 |  |
Property, Plant and Equipment, net | 8,469 |  | 8,469 |  |  | 8,842 |  |
Noncurrent Assets | 2,668 |  | 2,668 |  |  | 2,245 |  |
Total Assets | 12,704 |  | 12,704 |  |  | 12,594 |  |
Current Liabilities | 1,025 |  | 1,025 |  |  | 842 |  |
Noncurrent Liabilities | 3,248 |  | 3,248 |  |  | 3,001 |  |
Long-Term Debt | 2,431 |  | 2,431 |  |  | 2,791 |  |
Member's Equity | 6,000 | 6,039 | 6,000 | 6,039 | $ 6,022 | 5,960 | $ 6,196 | $ 5,967
TOTAL LIABILITIES AND CAPITALIZATION | 12,704 |  | 12,704 |  |  | 12,594 |  |
Power Senior Notes [Member] | Consolidating Adjustments [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Operating Revenues | (46) | (31) | (87) | (65) |  |  |  |
Operating Expenses | (46) | (31) | (87) | (65) |  |  |  |
Operating Income (Loss) | 0 | 0 | 0 | 0 |  |  |  |
Equity Earnings (Losses) of Subsidiaries | 25 | (51) | (276) | (282) |  |  |  |
Net Gains (Losses) on Trust Investments | 0 | 0 | 0 | 0 |  |  |  |
Other Income (Deductions) | (88) | (68) | (177) | (125) |  |  |  |
Non-Operating Pension and OPEB Credits (Costs) | 0 | 0 | 0 | 0 |  |  |  |
Interest Expense | 88 | 68 | 177 | 125 |  |  |  |
Income Tax Benefit (Expense) | 0 | 0 | 0 | 0 |  |  |  |
Net Income | 25 | (51) | (276) | (282) |  |  |  |
Comprehensive Income (Loss) | 12 | (48) | (304) | (269) |  |  |  |
Net Cash Provided By (Used In) Operating Activities |  |  | (78) | 98 |  |  |  |
Net Cash Provided By (Used In) Investing Activities |  |  | 1,051 | 808 |  |  |  |
Net Cash Provided By (Used In) Financing Activities |  |  | (973) | (906) |  |  |  |
Current Assets | (5,516) |  | (5,516) |  |  | (4,593) |  |
Property, Plant and Equipment, net | 0 |  | 0 |  |  | 0 |  |
Investment in Subsidiaries | (6,369) |  | (6,369) |  |  | (6,169) |  |
Noncurrent Assets | (261) |  | (261) |  |  | (238) |  |
Total Assets | (12,146) |  | (12,146) |  |  | (11,000) |  |
Current Liabilities | (5,516) |  | (5,516) |  |  | (4,593) |  |
Noncurrent Liabilities | (261) |  | (261) |  |  | (238) |  |
Long-Term Debt | 0 |  | 0 |  |  | 0 |  |
Member's Equity | (6,369) |  | (6,369) |  |  | (6,169) |  |
TOTAL LIABILITIES AND CAPITALIZATION | (12,146) |  | (12,146) |  |  | (11,000) |  |
Power Senior Notes [Member] | Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Operating Revenues | 1,063 | 747 | 2,464 | 2,133 |  |  |  |
Operating Expenses | 1,148 | 704 | 2,242 | 1,760 |  |  |  |
Operating Income (Loss) | (85) | 43 | 222 | 373 |  |  |  |
Equity Earnings (Losses) of Subsidiaries | (10) | (4) | (18) | (7) |  |  |  |
Net Gains (Losses) on Trust Investments | 38 | 8 | 163 | (14) |  |  |  |
Other Income (Deductions) | 58 | 40 | 113 | 73 |  |  |  |
Non-Operating Pension and OPEB Credits (Costs) | 3 | 2 | 6 | 6 |  |  |  |
Interest Expense | (24) | (19) | (55) | (36) |  |  |  |
Income Tax Benefit (Expense) | (1) | (23) | (145) | (115) |  |  |  |
Net Income | (21) | 47 | 286 | 280 |  |  |  |
Comprehensive Income (Loss) | (8) | 44 | 314 | 267 |  |  |  |
Net Cash Provided By (Used In) Operating Activities |  |  | 1,213 | 745 |  |  |  |
Net Cash Provided By (Used In) Investing Activities |  |  | (1,100) | (867) |  |  |  |
Net Cash Provided By (Used In) Financing Activities |  |  | (116) | 123 |  |  |  |
Current Assets | 1,964 |  | 1,964 |  |  | 1,479 |  |
Property, Plant and Equipment, net | 4,452 |  | 4,452 |  |  | 4,971 |  |
Investment in Subsidiaries | 1,090 |  | 1,090 |  |  | 1,107 |  |
Noncurrent Assets | 2,510 |  | 2,510 |  |  | 2,109 |  |
Total Assets | 10,016 |  | 10,016 |  |  | 9,666 |  |
Current Liabilities | 2,936 |  | 2,936 |  |  | 2,971 |  |
Noncurrent Liabilities | 2,143 |  | 2,143 |  |  | 1,996 |  |
Long-Term Debt | 0 |  | 0 |  |  | 0 |  |
Member's Equity | 4,937 |  | 4,937 |  |  | 4,699 |  |
TOTAL LIABILITIES AND CAPITALIZATION | 10,016 |  | 10,016 |  |  | 9,666 |  |
Power Senior Notes [Member] | Non-Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Operating Revenues | 66 | 51 | 122 | 102 |  |  |  |
Operating Expenses | 65 | 49 | 126 | 101 |  |  |  |
Operating Income (Loss) | 1 | 2 | (4) | 1 |  |  |  |
Equity Earnings (Losses) of Subsidiaries | 5 | 5 | 7 | 7 |  |  |  |
Net Gains (Losses) on Trust Investments | 0 | 0 | 0 | 0 |  |  |  |
Other Income (Deductions) | 0 | 0 | 0 | 0 |  |  |  |
Non-Operating Pension and OPEB Credits (Costs) | 0 | 1 | 0 | 1 |  |  |  |
Interest Expense | (12) | (6) | (20) | (11) |  |  |  |
Income Tax Benefit (Expense) | 2 | 2 | 7 | 4 |  |  |  |
Net Income | (4) | 4 | (10) | 2 |  |  |  |
Comprehensive Income (Loss) | (4) | 4 | (10) | 2 |  |  |  |
Net Cash Provided By (Used In) Operating Activities |  |  | 81 | (8) |  |  |  |
Net Cash Provided By (Used In) Investing Activities |  |  | (220) | (196) |  |  |  |
Net Cash Provided By (Used In) Financing Activities |  |  | 134 | 191 |  |  |  |
Current Assets | 315 |  | 315 |  |  | 304 |  |
Property, Plant and Equipment, net | 3,971 |  | 3,971 |  |  | 3,822 |  |
Investment in Subsidiaries | 0 |  | 0 |  |  | 0 |  |
Noncurrent Assets | 138 |  | 138 |  |  | 101 |  |
Total Assets | 4,424 |  | 4,424 |  |  | 4,227 |  |
Current Liabilities | 2,167 |  | 2,167 |  |  | 2,027 |  |
Noncurrent Liabilities | 827 |  | 827 |  |  | 730 |  |
Long-Term Debt | 0 |  | 0 |  |  | 0 |  |
Member's Equity | 1,430 |  | 1,430 |  |  | 1,470 |  |
TOTAL LIABILITIES AND CAPITALIZATION | 4,424 |  | 4,424 |  |  | 4,227 |  |
Power Senior Notes [Member] | Power Parent [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Operating Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Expenses | 2 | 3 | 3 | 3 |  |  |  |
Operating Income (Loss) | (2) | (3) | (3) | (3) |  |  |  |
Equity Earnings (Losses) of Subsidiaries | (15) | 55 | 294 | 289 |  |  |  |
Net Gains (Losses) on Trust Investments | 0 | 0 | 1 | 0 |  |  |  |
Other Income (Deductions) | 45 | 41 | 92 | 76 |  |  |  |
Non-Operating Pension and OPEB Credits (Costs) | 0 | 0 | 0 | 0 |  |  |  |
Interest Expense | (78) | (54) | (153) | (96) |  |  |  |
Income Tax Benefit (Expense) | 10 | 2 | 25 | 9 |  |  |  |
Net Income | (40) | 41 | 256 | 275 |  |  |  |
Comprehensive Income (Loss) | (22) | 43 | 290 | 272 |  |  |  |
Net Cash Provided By (Used In) Operating Activities |  |  | (66) | 34 |  |  |  |
Net Cash Provided By (Used In) Investing Activities |  |  | (445) | (840) |  |  |  |
Net Cash Provided By (Used In) Financing Activities |  |  | 511 | 806 |  |  |  |
Current Assets | 4,804 |  | 4,804 |  |  | 4,317 |  |
Property, Plant and Equipment, net | 46 |  | 46 |  |  | 49 |  |
Investment in Subsidiaries | 5,279 |  | 5,279 |  |  | 5,062 |  |
Noncurrent Assets | 281 |  | 281 |  |  | 273 |  |
Total Assets | 10,410 |  | 10,410 |  |  | 9,701 |  |
Current Liabilities | 1,438 |  | 1,438 |  |  | 437 |  |
Noncurrent Liabilities | 539 |  | 539 |  |  | 513 |  |
Long-Term Debt | 2,431 |  | 2,431 |  |  | 2,791 |  |
Member's Equity | 6,002 |  | 6,002 |  |  | 5,960 |  |
TOTAL LIABILITIES AND CAPITALIZATION | 10,410 |  | 10,410 |  |  | 9,701 |  |
Power Senior Notes [Member] | PSEG Power [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Operating Revenues | 1,083 | 767 | 2,499 | 2,170 |  |  |  |
Operating Expenses | 1,169 | 725 | 2,284 | 1,799 |  |  |  |
Operating Income (Loss) | (86) | 42 | 215 | 371 |  |  |  |
Equity Earnings (Losses) of Subsidiaries | 5 | 5 | 7 | 7 |  |  |  |
Net Gains (Losses) on Trust Investments | 38 | 8 | 164 | (14) |  |  |  |
Other Income (Deductions) | 15 | 13 | 28 | 24 |  |  |  |
Non-Operating Pension and OPEB Credits (Costs) | 3 | 3 | 6 | 7 |  |  |  |
Interest Expense | (26) | (11) | (51) | (18) |  |  |  |
Income Tax Benefit (Expense) | 11 | (19) | (113) | (102) |  |  |  |
Net Income | (40) | 41 | 256 | 275 |  |  |  |
Comprehensive Income (Loss) | (22) | $ 43 | 290 | 272 |  |  |  |
Net Cash Provided By (Used In) Operating Activities |  |  | 1,150 | 869 |  |  |  |
Net Cash Provided By (Used In) Investing Activities |  |  | (714) | (1,095) |  |  |  |
Net Cash Provided By (Used In) Financing Activities |  |  | (444) | $ 214 |  |  |  |
Current Assets | 1,567 |  | 1,567 |  |  | 1,507 |  |
Property, Plant and Equipment, net | 8,469 |  | 8,469 |  |  | 8,842 |  |
Investment in Subsidiaries | 0 |  | 0 |  |  | 0 |  |
Noncurrent Assets | 2,668 |  | 2,668 |  |  | 2,245 |  |
Total Assets | 12,704 |  | 12,704 |  |  | 12,594 |  |
Current Liabilities | 1,025 |  | 1,025 |  |  | 842 |  |
Noncurrent Liabilities | 3,248 |  | 3,248 |  |  | 3,001 |  |
Long-Term Debt | 2,431 |  | 2,431 |  |  | 2,791 |  |
Member's Equity | 6,000 |  | 6,000 |  |  | 5,960 |  |
TOTAL LIABILITIES AND CAPITALIZATION | $ 12,704 |  | $ 12,704 |  |  | $ 12,594 |  |

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