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Consolidated Statements Of Stockholders' Equity - USD ($) shares in Millions, $ in Millions | Total | Cumulative Effect, Period of Adoption, Adjustment | Common Stock [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment | Accumulated Other Comprehensive Income (Loss) [Member] | Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment | Public Service Electric and Gas Company | Public Service Electric and Gas Company Cumulative Effect, Period of Adoption, Adjustment | Public Service Electric and Gas Company Common Stock [Member] | Public Service Electric and Gas Company Contributed Capital [Member] | Public Service Electric and Gas Company Basis Adjustment [Member] | Public Service Electric and Gas Company Retained Earnings [Member] | Public Service Electric and Gas Company Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment | Public Service Electric and Gas Company Accumulated Other Comprehensive Income (Loss) [Member] | PSEG Power LLC | PSEG Power LLC Contributed Capital [Member] | PSEG Power LLC Basis Adjustment [Member] | PSEG Power LLC Retained Earnings [Member] | PSEG Power LLC Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment | PSEG Power LLC Accumulated Other Comprehensive Income (Loss) [Member] | PSEG Power LLC Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance (in value) at Dec. 31, 2017 | $ 13,847 |  |  | $ 4,961 | $ (763) | $ 9,878 | $ 176 | $ (229) | $ (176) | $ 9,834 |  | $ 892 | $ 1,095 | $ 986 | $ 6,861 |  | $ 0 | $ 5,967 | $ 2,214 | $ (986) | $ 4,911 | $ 175 | $ (172) | $ (175)
Beginning Balance, shares at Dec. 31, 2017 |  |  |  | 534 | (29) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income | 1,438 |  |  |  |  | 1,438 |  |  |  | 1,067 |  |  |  |  | 1,067 |  |  | 365 |  |  | 365 |  |  |
Other Comprehensive Income (Loss), net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), net of tax | 28 |  |  |  |  |  |  | 28 |  | (1) |  |  |  |  |  |  | (1) | 28 |  |  |  |  | 28 |
Comprehensive Income | 1,466 |  |  |  |  |  |  |  |  | 1,066 |  |  |  |  |  |  |  | 393 |  |  |  |  |  |
Cash Dividends on Common Stock | (910) |  |  |  |  | (910) |  | 0 |  |  |  |  |  |  |  |  |  | (400) |  |  | (400) |  |  |
Contributed Capital |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other | (26) |  |  | $ 19 | $ (45) | 0 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury Stock, Shares, Acquired |  |  |  |  | (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance (in value) at Dec. 31, 2018 | $ 14,377 |  |  | $ 4,980 | $ (808) | 10,582 | 81 | (377) | $ (81) | 10,900 |  | 892 | 1,095 | 986 | 7,928 |  | (1) | 5,960 | 2,214 | (986) | 5,051 | $ 69 | (319) | $ (69)
Ending Balance, shares at Dec. 31, 2018 |  |  |  | 534 | (30) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 1.80 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), tax | $ (6) |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  | (7) |  |  |  |  |  |
Net Income | 1,693 | [1] |  |  |  | 1,693 |  |  |  | 1,250 |  |  |  |  | 1,250 |  |  | 468 |  |  | 468 |  |  |
Other Comprehensive Income (Loss), net of tax | (31) |  |  |  |  |  |  | (31) |  | 3 |  |  |  |  |  |  | 3 | (13) |  |  |  |  | (13) |
Comprehensive Income | 1,662 |  |  |  |  |  |  |  |  | 1,253 |  |  |  |  |  |  |  | 455 |  |  |  |  |  |
Cash Dividends on Common Stock | (950) |  |  |  |  | (950) |  | 0 |  | (250) |  |  |  |  | (250) |  |  | (525) |  |  | (525) |  |  |
Contributed Capital |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other | 0 |  |  | $ 23 | $ (23) | 0 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury Stock, Shares, Acquired |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance (in value) at Dec. 31, 2019 | $ 15,089 |  | $ (2) | $ 5,003 | $ (831) | 11,406 | $ (2) | (489) |  | 11,903 | $ (2) | 892 | 1,095 | 986 | 8,928 | $ (2) | 2 | 5,890 | 2,214 | (986) | 5,063 |  | (401) |
Ending Balance, shares at Dec. 31, 2019 |  |  |  | 534 | (30) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 1.88 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), tax | $ (2) |  |  |  |  |  |  |  |  | (1) |  |  |  |  |  |  |  | (9) |  |  |  |  |  |
Net Income | 1,905 | [1] |  |  |  | 1,905 |  |  |  | 1,327 |  |  |  |  | 1,327 |  |  | 594 |  |  | 594 |  |  |
Other Comprehensive Income (Loss), net of tax | (15) |  |  |  |  |  |  | (15) |  | 1 |  |  |  |  |  |  | 1 | (18) |  |  |  |  | (18) |
Comprehensive Income | 1,890 |  |  |  |  |  |  |  |  | 1,328 |  |  |  |  |  |  |  | 576 |  |  |  |  |  |
Cash Dividends on Common Stock | (991) |  |  |  |  | (991) |  | 0 |  | (175) |  |  |  |  | (175) |  |  | (350) |  |  | (350) |  |  |
Contributed Capital |  |  |  |  |  |  |  |  |  | 75 |  |  | 75 |  |  |  |  |  |  |  |  |  |  |
Noncash Contribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 96 | 96 |  |  |  |  |
Other | (2) |  |  | $ 28 | $ (30) | 0 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury Stock, Shares, Acquired |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance (in value) at Dec. 31, 2020 | $ 15,984 |  |  | $ 5,031 | $ (861) | $ 12,318 |  | $ (504) |  | 13,129 |  | $ 892 | $ 1,170 | $ 986 | $ 10,078 |  | $ 3 | 6,212 | $ 2,310 | $ (986) | $ 5,307 |  | $ (419) |
Ending Balance, shares at Dec. 31, 2020 |  |  |  | 534 | (30) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 1.96 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), tax | $ 0 |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  | $ 1 |  |  |  |  |  |
[1] | Includes an after-tax gain of $86 million in the year ended December 31, 2020 related to the sale of PSEG Power’s interest in the Yards Creek generation facility and an after-tax loss of $286 million in the year ended December 31, 2019 related to the sale of PSEG Power’s ownership interests in the Keystone and Conemaugh fossil generation plants. See Note 4. Early Plant Retirements/Asset Dispositions for additional information.

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