Asset Impairment Charges and Facility Closing and Reorganization Costs - Approved Plans and Related Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Facility closing and reorganization costs, net	$ 74,992	$ 24,913	$ 8,719
Closure of facilities
Restructuring Cost and Reserve [Line Items]
Closure of facilities	60,460	12,703	8,719
Charges incurred to date	111,900
Expected costs	7,600
Organization effectiveness
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	(331)	12,210	0
Enterprise-wide cost productivity plan
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	$ 14,863	$ 0	$ 0