Description of the Business and Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, plant and equipment
Depreciation expense	$ 283,300	$ 263,700	$ 260,600
Property, plant and equipment	5,684,970	5,165,508
Less accumulated depreciation	2,739,203	2,489,604
Property, plant and equipment, net	2,945,767	2,675,904
Land and improvements
Property, plant and equipment
Property, plant and equipment	331,926	314,854
Buildings and improvements
Property, plant and equipment
Property, plant and equipment	$ 778,701	723,504
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	$ 4,416,212	4,035,717
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	$ 158,131	91,433
Parent Company [Member]
Property, plant and equipment
Property, plant and equipment, net	871,482	859,419
Guarantors
Property, plant and equipment
Property, plant and equipment, net	1,918,198	1,618,438
Combined Non-Guarantors
Property, plant and equipment
Property, plant and equipment, net	$ 156,087	$ 198,047