Restructuring - Expected Cost, Costs Recognized, and Costs to be Recognized - 2016 Projects (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Costs charged to expense	$ 6,278	$ 77,183	$ 6,418
2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Costs at December 31, 2019	100,885
Costs charged to expense	9,272	78,123
Expected Remaining Costs to be Recognized at December 31, 2019	13,490
2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Costs at December 31, 2019	50,978
Costs charged to expense	(2,994)	53,272
Expected Remaining Costs to be Recognized at December 31, 2019	700
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Costs charged to expense	(608)
Employee Severance [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Costs at December 31, 2019	72,133
Costs charged to expense	(1,645)	73,778
Expected Remaining Costs to be Recognized at December 31, 2019	0
Employee Severance [Member] | 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Costs at December 31, 2019	36,882
Costs charged to expense	1,037	35,845
Expected Remaining Costs to be Recognized at December 31, 2019	0
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Costs charged to expense	(1,785)
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Costs at December 31, 2019	3,842
Costs charged to expense	3,725	117
Expected Remaining Costs to be Recognized at December 31, 2019	0
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] | 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Costs at December 31, 2019	154
Costs charged to expense	(5,510)	5,664
Expected Remaining Costs to be Recognized at December 31, 2019	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Costs charged to expense	8,671
Other Restructuring [Member] | 2018 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Costs at December 31, 2019	24,910
Costs charged to expense	7,192	4,228
Expected Remaining Costs to be Recognized at December 31, 2019	13,490
Other Restructuring [Member] | 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Costs at December 31, 2019	13,942
Costs charged to expense	1,479	$ 11,763
Expected Remaining Costs to be Recognized at December 31, 2019	$ 700