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Valuation And Qualifying Accounts | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Valuation And Qualifying Accounts | Schedule II—Valuation and Qualifying Accounts Years Ended December 31, 2020—December 31, 2018 PUBLIC SERVICE ENTERPRISE GROUP INCORPORATED
| Column A |  | Column B |  | Column C Additions |  |  | Column D |  |  |  | Column E |
| Description |  | Balance at Beginning of Period |  | Charged to cost and expenses |  | Charged to other accounts- describe |  |  | Deductions- describe |  |  |  | Balance at End of Period |
|  |  | Millions |
| 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Credit Losses |  | $ | 68 |  | (D) | $ | 175 |  | (A) | $ | — |  |  |  | $ | 37 |  |  | (B) |  | $ | 206 |  |
| Materials and Supplies Valuation Reserve |  | 11 |  |  | 1 |  |  | — |  |  |  | 2 |  |  | (C) |  | 10 |  |
| 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Credit Losses |  | $ | 63 |  |  | $ | 87 |  | (A) | $ | — |  |  |  | $ | 90 |  |  | (B) |  | $ | 60 |  |
| Materials and Supplies Valuation Reserve |  | 9 |  |  | 3 |  |  | — |  |  |  | 1 |  |  | (C) |  | 11 |  |
| 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Credit Losses |  | $ | 59 |  |  | $ | 91 |  | (A) | $ | — |  |  |  | $ | 87 |  |  | (B) |  | $ | 63 |  |
| Materials and Supplies Valuation Reserve |  | 7 |  |  | 4 |  |  | — |  |  |  | 2 |  |  | (C) |  | 9 |  |
(A)For a discussion of bad debt recoveries, see Note 1. Organization, Basis of Presentation and Summary of Significant Accounting Policies. (B)Accounts Receivable written off. (C)Reduce reserve to appropriate level and to remove obsolete inventory. (D)Includes $8 million due to the adoption of ASU 2016-13. PUBLIC SERVICE ELECTRIC AND GAS COMPANY
| Column A |  | Column B |  | Column C Additions |  |  | Column D |  |  |  | Column E |
| Description |  | Balance at Beginning of Period |  | Charged to cost and expenses |  | Charged to other accounts- describe |  |  | Deductions- describe |  |  |  | Balance at End of Period |
|  |  | Millions |
| 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Credit Losses |  | $ | 68 |  | (C) | $ | 175 |  | (A) | $ | — |  |  |  | $ | 37 |  |  | (B) |  | $ | 206 |  |
| Materials and Supplies Valuation Reserve |  | 2 |  |  | — |  |  | — |  |  |  | — |  |  |  |  | 2 |  |
| 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Credit Losses |  | $ | 63 |  |  | $ | 87 |  | (A) | $ | — |  |  |  | $ | 90 |  |  | (B) |  | $ | 60 |  |
| Materials and Supplies Valuation Reserve |  | 2 |  |  | — |  |  | — |  |  |  | — |  |  |  |  | 2 |  |
| 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Credit Losses |  | $ | 59 |  |  | $ | 91 |  | (A) | $ | — |  |  |  | $ | 87 |  |  | (B) |  | $ | 63 |  |
| Materials and Supplies Valuation Reserve |  | — |  |  | 2 |  |  | — |  |  |  | — |  |  |  |  | 2 |  |
(A)For a discussion of bad debt recoveries, see Note 1. Organization, Basis of Presentation and Summary of Significant Accounting Policies. (B)Accounts Receivable written off. (C)Includes $8 million due to the adoption of ASU 2016-13. PSEG POWER LLC
| Column A |  | Column B |  | Column C Additions |  | Column D |  |  |  | Column E |
| Description |  | Balance at Beginning of Period |  | Charged to cost and expenses |  | Charged to other accounts- describe |  | Deductions- describe |  |  |  | Balance at End of Period |
|  |  |  |  |  |  | Millions |  |  |  |  |  |  |
| 2020 |  |  |  |  |  |  |  |  |  |  |  |  |
| Materials and Supplies Valuation Reserve |  | $ | 9 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 2 |  |  | (A) |  | $ | 8 |  |
| 2019 |  |  |  |  |  |  |  |  |  |  |  |  |
| Materials and Supplies Valuation Reserve |  | $ | 7 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 1 |  |  | (A) |  | $ | 9 |  |
| 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
| Materials and Supplies Valuation Reserve |  | $ | 7 |  |  | $ | 2 |  |  | $ | — |  |  | $ | 2 |  |  | (A) |  | $ | 7 |  |
(A)Reduce reserve to appropriate level and to remove obsolete inventory.

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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