Annual report pursuant to Section 13 and 15(d)

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details)

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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
SEC Schedule, 12-09, Allowance, Credit Loss [Member]      
Valuation allowances and reserves [Roll Forward]      
Balance at Beginning of Period $ 50,516 $ 34,225 $ 32,755
Charges of Costs, Expenses and Other 26,103 24,419 21,378
Write-off of Accounts Receivable 11,901 7,968 19,777
Other [1] 8,186 (160) (131)
Balance at End of Period 72,904 50,516 34,225
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]      
Valuation allowances and reserves [Roll Forward]      
Balance at Beginning of Period 667,242 530,642 596,437
Charges of Costs, Expenses and Other 344,161 8,536 (8,845)
Deletions 0 0 0
Other [2] 89,004 128,064 (56,950)
Balance at End of Period $ 1,100,407 $ 667,242 $ 530,642
[1] Foreign currency adjustments, acquisitions and miscellaneous adjustments. The year ended December 31, 2020 includes a $3.0 million cumulative-effect adjustment related to our adoption of the accounting guidance for current expected credit losses for financial assets measured at amortized cost.
[2] During 2020, 2019 and 2018, the valuation allowance was adjusted for acquisitions, divestitures and foreign currency adjustments. The 2018 valuation allowance was also reduced for decreases in fully valued deferred tax assets, primarily United States foreign tax credits utilized to offset the transition tax liability under the provisions of the TCJA and declining net operating loss carryforwards due to improved profitability. The 2019 and 2020 valuation allowance increased due to increases in fully valued deferred tax assets, primarily net operating loss carryforwards.