v3.20.4

Schedule II - Valuation And Qualifying Accounts | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation And Qualifying Accounts | SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS Allowance for Credit Loss
COL. A | COL. B | COL. C | COL. D | COL. E
|  | Additions |  |
|  | (1) | (2) | (3) |  |
| Balance at Beginning of Period | Charged to Costs and Expenses (a) | Charged to Other Accounts (b) | Acquisitions (c) | Deductions (d) | Balance at End of Period (e)
Year 2020 | $ | 1,235 |  | 1,972 |  | 405 |  | — |  | 2,023 |  | $ | 1,589 |
Year 2019 | $ | 907 |  | 2,575 |  | — |  | — |  | 2,247 |  | $ | 1,235 |
Year 2018 | $ | 663 |  | 1,791 |  | — |  | 179 |  | 1,726 |  | $ | 907 |
(a)Includes amounts previously written off which were credited directly to this account when recovered. Excludes direct charges and credits to expense for nontrade receivables in the consolidated statements of income. Includes the impact to operating expenses, for the year ended December 31, 2020, after adoption of ASC 326. (b)Opening adjustments upon adoption of ASC 326, with modified retrospective application, as of January 1, 2020 (see Note 1). (c)Acquisition of Time Warner in 2018. (d)Amounts written off as uncollectible, or related to divested entities. (e)Includes balances applicable to trade receivables, loans, contract assets and other assets subject to credit loss measurement (see Note 1). SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS Allowance for Deferred Tax Assets
COL. A | COL. B | COL. C | COL. D | COL. E
|  | Additions |  |
|  | (1) | (2) | (3) |  |
| Balance at Beginning of Period | Charged to Costs and Expenses | Charged to Other Accounts (a) | Acquisitions (b) | Deductions (c) | Balance at End of Period
Year 2020 | $ | 4,941 |  | (168) |  | — |  | — |  | — |  | $ | 4,773 |
Year 2019 | $ | 4,588 |  | (18) |  | 371 |  | — |  | — |  | $ | 4,941 |
Year 2018 | $ | 4,640 |  | (210) |  | (53) |  | 211 |  | — |  | $ | 4,588 |
(a)Includes current year reclassifications from other balance sheet accounts. (b)Acquisition of Time Warner in 2018. (c)Reductions to valuation allowances related to deferred tax assets.

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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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