Description of the Business and Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, plant and equipment
Depreciation expense	$ 285,600	$ 283,300	$ 263,700
Property, plant and equipment	6,124,714	5,684,970
Less accumulated depreciation	2,988,828	2,739,203
Property, Plant and Equipment, Net, Total	3,135,886	2,945,767
Land and improvements
Property, plant and equipment
Property, plant and equipment	333,879	331,926
Buildings and improvements
Property, plant and equipment
Property, plant and equipment	$ 805,381	778,701
Buildings and improvements | Minimum
Property, plant and equipment
Property, plant and equipment useful life	10 years
Buildings and improvements | Maximum
Property, plant and equipment
Property, plant and equipment useful life	40 years
Plant, machinery and equipment
Property, plant and equipment
Property, plant and equipment	$ 4,594,778	4,416,212
Plant, machinery and equipment | Minimum
Property, plant and equipment
Property, plant and equipment useful life	3 years
Plant, machinery and equipment | Maximum
Property, plant and equipment
Property, plant and equipment useful life	20 years
Construction in progress
Property, plant and equipment
Property, plant and equipment	$ 390,676	$ 158,131