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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] |
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (In thousands)
| Balance at beginning of year |  | Charged to income |  | Other (a) |  | Write-down |  | Balance at end of year
Allowance for doubtful accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended December 31, 2020 | $ | 69,433 |  |  | $ | 26,942 |  |  | $ | 47,521 |  |  | $ | 51,104 |  |  | $ | 92,792 |
Year ended December 31, 2019 | $ | 80,000 |  |  | $ | 26,220 |  |  | $ | (681) |  |  | $ | 36,106 |  |  | $ | 69,433 |
Year ended December 31, 2018 | $ | 59,661 |  |  | $ | 35,978 |  |  | $ | (1,958) |  |  | $ | 13,681 |  |  | $ | 80,000 |
(a)“Other” primarily includes the effect of fluctuations in foreign currencies and the allowance for doubtful accounts of the businesses acquired and disposed of by the company. For the year ended December 31, 2020, "Other" also includes the effect of adoption of ASU No. 2016-13, refer to Note 1, Significant Accounting Policies, to the consolidated financial statements included in Item 8 of Part II of this 10-K.

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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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