Restructuring Expected Costs - 2018 Projects (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 44,462	$ 6,592	$ 41,531	$ 7,685
2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	91,946		91,946
Restructuring and Related Cost, Cost Incurred to Date					$ 87,395
Restructuring			(2,334)
Restructuring and Related Cost, Expected Cost Remaining	6,885		6,885
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring			32,155
Employee Severance [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	67,663		67,663
Restructuring and Related Cost, Cost Incurred to Date					72,133
Restructuring			(4,470)
Restructuring and Related Cost, Expected Cost Remaining	0		0
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring			6,518
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	3,120		3,120
Restructuring and Related Cost, Cost Incurred to Date					3,842
Restructuring			(722)
Restructuring and Related Cost, Expected Cost Remaining	0		0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring			2,858
Other Restructuring [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	21,163		21,163
Restructuring and Related Cost, Cost Incurred to Date					$ 11,420
Restructuring			2,858
Restructuring and Related Cost, Expected Cost Remaining	$ 6,885		$ 6,885