Income Taxes (Details 4) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year			$ 33,205	$ 77,275	$ 51,851
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 19,500		19,500
Increases related to current year tax positions			2,602	0	17,264
Increase related to prior year tax positions			2,719	2,229	5,022
Lapse of statute of limitations			(13,371)	(1,558)	(1,260)
Settlements			(4,402)	(40,514)	(986)
Change due to Currency Translation			0	(4,227)	(5,384)
Balance, end of year	20,753	$ 33,205	20,753	$ 33,205	$ 77,275
Discrete tax expense	23,200	$ 33,100
Accrued interest and penalties	3,900		3,900
Other Current Assets
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, end of year	$ 10,600		10,600
Foreign
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Income Tax Examination, Estimate of Possible Loss			$ 321,300