Restructuring Related Balance Sheet Activity (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2021	$ 72,626
Costs charged to expense	(1,788)
Cash payments	(14,657)
Cash receipts	2,007
Net assets disposed and impaired	(2,885)
Effect of change in exchange rates	(1,477)
Ending balance, June 30, 2021	53,826
Accrued Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2021	70,005
Costs charged to expense	(7,406)
Cash payments	(11,569)
Cash receipts	0
Net assets disposed and impaired	0
Effect of change in exchange rates	(1,465)
Ending balance, June 30, 2021	49,565
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2021	0
Costs charged to expense	878
Cash payments	0
Cash receipts	2,007
Net assets disposed and impaired	(2,885)
Effect of change in exchange rates	0
Ending balance, June 30, 2021	0
Other Accrued Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2021	2,621
Costs charged to expense	4,740
Cash payments	(3,088)
Cash receipts	0
Net assets disposed and impaired	0
Effect of change in exchange rates	(12)
Ending balance, June 30, 2021	$ 4,261