v3.19.3.a.u2

Schedule of Valuation and Qualifying Accounts Disclosure | 12 Months Ended
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Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts Disclosure | CALPINE CORPORATION AND SUBSIDIARIES SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS
Description | Balance at Beginning of Year |  | Charged to Expense |  | Charged to Other Accounts |  | Deductions(1) |  | Balance at End of Year
| (in millions)
Year Ended December 31, 2019 |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 9 |  |  | $ | 6 |  |  | $ | (1 | ) |  | $ | (5 | ) |  | $ | 9 |
Deferred tax asset valuation allowance | 1,000 |  |  | (127 | ) |  | — |  |  | — |  |  | 873 |
Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 9 |  |  | $ | 5 |  |  | $ | 1 |  |  | $ | (6 | ) |  | $ | 9 |
Deferred tax asset valuation allowance | 1,168 |  |  | (168 | ) |  | — |  |  | — |  |  | 1,000 |
Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 6 |  |  | $ | 4 |  |  | $ | 2 |  |  | $ | (3 | ) |  | $ | 9 |
Deferred tax asset valuation allowance | 1,581 |  |  | (413 | ) |  | — |  |  | — |  |  | 1,168 |
____________ (1) Represents write-offs of accounts considered to be uncollectible and previously reserved.

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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=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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