Income Taxes (Details 4) - USD ($) $ in Thousands		12 Months Ended
	Oct. 23, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year		$ 77,275	$ 51,851	$ 14,967
Increases related to current year tax positions		0	17,264	40,840
Increase related to prior year tax positions		2,229	5,022	456
Lapse of statute of limitations		(1,558)	(1,260)	(4,070)
Settlements		(40,514)	(986)	(342)
Change due to Currency Translation		(4,227)
Change due to Currency Translation			5,384	0
Balance, end of year		33,205	77,275	51,851
Discrete tax expense	$ 33,100		94,400	$ 39,600
Accrued interest and penalties		6,100
Other Current Assets
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, end of year		5,100
UNITED STATES FEDERAL
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Settlements		(4,700)
Foreign
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Income Tax Examination, Estimate of Possible Loss		334,500
Remeasurement new tax rate
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Discrete tax expense		9,900	12,800
State and Foreign on undistributed foreign earnings [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Discrete tax expense		$ 6,300	$ 15,100