Restructuring Restructuring Expected Costs - 2018 Projects (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring	$ (248)	$ 7,262
2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	97,312
Restructuring and Related Cost, Cost Incurred to Date			$ 87,395
Restructuring	(248)
Restructuring and Related Cost, Expected Cost Remaining	10,165
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	(517)
Employee Severance [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	71,616
Restructuring and Related Cost, Cost Incurred to Date			72,133
Restructuring	(517)
Restructuring and Related Cost, Expected Cost Remaining	0
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	(955)
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	2,887
Restructuring and Related Cost, Cost Incurred to Date			3,842
Restructuring	(955)
Restructuring and Related Cost, Expected Cost Remaining	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	1,224
Other Restructuring [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	22,809
Restructuring and Related Cost, Cost Incurred to Date			$ 11,420
Restructuring	1,224
Restructuring and Related Cost, Expected Cost Remaining	$ 10,165