Restructuring - Rollforward of Restructuring Liability (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, current	$ 82,638
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Restructuring costs	112,184
Cash payments	(8,938)
Non-cash charges	(17,530)
Translation	848
Restructuring reserve, ending balance	86,564
Severance and other employee costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Restructuring costs	88,814
Cash payments	(5,440)
Non-cash charges	(6,133)
Translation	356
Restructuring reserve, ending balance	77,597
Facility and closure costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Restructuring costs	11,973
Cash payments	(3,498)
Non-cash charges	0
Translation	492
Restructuring reserve, ending balance	8,967
Accelerated operating lease costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Restructuring costs	3,605
Cash payments	0
Non-cash charges	(3,605)
Translation	0
Restructuring reserve, ending balance	0
Asset impairments
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Restructuring costs	7,792
Cash payments	0
Non-cash charges	(7,792)
Translation	0
Restructuring reserve, ending balance	$ 0