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Valuation And Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Valuation And Qualifying Accounts | 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 |
| 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Doubtful Accounts |  | $ | 68 |  |  | $ | 76 |  |  | $ | — |  |  | $ | 85 |  |  | (A) |  | $ | 59 |  |
| Materials and Supplies Valuation Reserve |  | 37 |  |  | 2 |  |  | — |  |  | 32 |  |  | (C) |  | 7 |  |
| 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Doubtful Accounts |  | $ | 67 |  |  | $ | 85 |  |  | $ | — |  |  | $ | 84 |  |  | (A) |  | $ | 68 |  |
| Materials and Supplies Valuation Reserve |  | 11 |  |  | 32 |  |  | — |  |  | 6 |  |  | (B) |  | 37 |  |
| 2015 |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Doubtful Accounts |  | $ | 52 |  |  | $ | 101 |  |  | $ | — |  |  | $ | 86 |  |  | (A) |  | $ | 67 |  |
| Materials and Supplies Valuation Reserve |  | 15 |  |  | 2 |  |  | — |  |  | 6 |  |  | (B) |  | 11 |  |
(A) | Accounts Receivable written off.
(B) | Reduce reserve to appropriate level and to remove obsolete inventory.
(C) | Hudson and Mercer inventory written off.
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 |
| 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Doubtful Accounts |  | $ | 68 |  |  | $ | 76 |  |  | $ | — |  |  | $ | 85 |  |  | (A) |  | $ | 59 |  |
| Materials and Supplies Valuation Reserve |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  | — |  |
| 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Doubtful Accounts |  | $ | 67 |  |  | $ | 85 |  |  | $ | — |  |  | $ | 84 |  |  | (A) |  | $ | 68 |  |
| Materials and Supplies Valuation Reserve |  | 1 |  |  | — |  |  | — |  |  | 1 |  |  | (B) |  | — |  |
| 2015 |  |  |  |  |  |  |  |  |  |  |  |  |
| Allowance for Doubtful Accounts |  | $ | 52 |  |  | $ | 101 |  |  | $ | — |  |  | $ | 86 |  |  | (A) |  | $ | 67 |  |
| Materials and Supplies Valuation Reserve |  | 2 |  |  | — |  |  | — |  |  | 1 |  |  | (B) |  | 1 |  |
(A) | Accounts Receivable written off.
(B) | Reduce reserve to appropriate level and to remove obsolete inventory.
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 |  |  |  |  |  |  |
| 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
| Materials and Supplies Valuation Reserve |  | $ | 37 |  |  | $ | 2 |  |  | $ | — |  |  | $ | 32 |  |  | (A) |  | $ | 7 |  |
| 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
| Materials and Supplies Valuation Reserve |  | $ | 10 |  |  | $ | 32 |  |  | $ | — |  |  | $ | 5 |  |  | (B) |  | $ | 37 |  |
| 2015 |  |  |  |  |  |  |  |  |  |  |  |  |
| Materials and Supplies Valuation Reserve |  | $ | 13 |  |  | $ | 2 |  |  | $ | — |  |  | $ | 5 |  |  | (B) |  | $ | 10 |  |
(A) | Hudson and Mercer inventory written off.
(B) | Reduce reserve to appropriate level and to remove obsolete inventory.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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