Restructuring Expected Costs - 2018 Projects (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring	$ (830)
2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	82,769
Restructuring and Related Cost, Cost Incurred to Date		$ 81,176
Restructuring	943
Restructuring and Related Cost, Expected Cost Remaining	650
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	(7,586)
Employee Severance [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	59,229
Restructuring and Related Cost, Cost Incurred to Date		63,173
Restructuring	(3,944)
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	951
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	3,788
Restructuring and Related Cost, Cost Incurred to Date		2,786
Restructuring	1,002
Restructuring and Related Cost, Expected Cost Remaining	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	5,805
Other Restructuring [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	19,752
Restructuring and Related Cost, Cost Incurred to Date		$ 15,217
Restructuring	3,885
Restructuring and Related Cost, Expected Cost Remaining	$ 650