Property, Plant and Equipment (Summary Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 8,496,008	$ 8,227,074
Less accumulated depreciation and amortization	3,797,091	3,527,172
Net property, plant and equipment	4,698,917	4,699,902
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	469,837	407,780
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	1,790,781	1,584,240
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	5,602,474	5,334,060
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	163,017	230,644
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	103,755	94,683
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 366,144	$ 575,667