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Selected Quarterly Data (Schedule Of Selected Quarterly Data) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Schedule of Quarterly Data [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues | $ 2,096 |  | $ 2,263 | $ 2,133 | $ 2,592 | $ 2,090 |  | $ 2,450 | $ 1,905 | $ 2,616 | $ 9,084 | $ 9,061 | $ 10,415
Operating Income (Loss) | 362 |  | 693 | 196 | 178 | (175) |  | 577 | 347 | 827 | 1,429 | 1,576 | 2,962
Net Income (Loss) | $ 956 | [1] | $ 395 | $ 109 | $ 114 | $ (98) | [1] | $ 327 | $ 187 | $ 471 |  |  |
Net Income (Loss) |  |  |  |  |  |  |  |  |  |  | $ 1,574 | $ 887 | $ 1,679
Basic | 505 |  | 505 | 505 | 505 | 505 |  | 505 | 505 | 505 | 505 | 505 | 505
Diluted | 508 |  | 507 | 507 | 508 | 508 |  | 508 | 508 | 508 | 507 | 508 | 508
Earnings Per Share, Basic | $ 1.89 |  | $ 0.78 | $ 0.22 | $ 0.23 | $ (0.19) |  | $ 0.65 | $ 0.37 | $ 0.93 | $ 3.12 | $ 1.76 | $ 3.32
Earnings Per Share, Diluted | $ 1.88 |  | $ 0.78 | $ 0.22 | $ 0.22 | $ (0.19) |  | $ 0.64 | $ 0.37 | $ 0.93 | $ 3.10 | $ 1.75 | $ 3.30
PSE&G [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Quarterly Data [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues | $ 1,545 |  | $ 1,509 | $ 1,368 | $ 1,812 | $ 1,475 |  | $ 1,684 | $ 1,350 | $ 1,712 | $ 6,234 | $ 6,221 | $ 6,636
Operating Income (Loss) | 393 |  | 459 | 379 | 521 | 369 |  | 450 | 333 | 462 | 1,752 | 1,614 | 1,462
Net Income (Loss) | 220 |  | 246 | 208 | 299 | 193 |  | 255 | 179 | 262 |  |  |
Net Income (Loss) |  |  |  |  |  |  |  |  |  |  | 973 | 889 | 787
Power [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Quarterly Data [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues | 844 |  | 873 | 929 | 1,284 | 921 |  | 1,075 | 714 | 1,313 | 3,930 | 4,023 | 4,928
Operating Income (Loss) | (82) |  | 213 | (187) | (303) | (556) |  | 238 | (12) | 343 | (359) | 13 | 1,430
Net Income (Loss) | $ 610 | [1] | $ 136 | $ (97) | $ (170) | $ (302) | [1] | $ 139 | $ (11) | $ 192 |  |  |
Net Income (Loss) |  |  |  |  |  |  |  |  |  |  | $ 479 | $ 18 | $ 856
[1] | The increases in Operating Income at PSEG consolidated and Power in the fourth quarter 2017 as compared to the same quarter in 2016 were primarily due to higher costs in 2016 related to closing the coal/gas Hudson and Mercer units, which were fully depreciated as of June 1, 2017. The increases in Net Income at PSEG consolidated and Power in the fourth quarter 2017 as compared to the same quarter in 2016 also includes the impact of the remeasurement of deferred tax balances resulting from the enactment of new tax legislation in December 2017. See Note 20. Income Taxes for additional information.

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