Property, Plant and Equipment (Summary Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 8,227,074	$ 7,486,284
Less accumulated depreciation and amortization	3,527,172	3,215,494
Net property, plant and equipment	4,699,902	4,270,790
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	407,780	385,027
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	1,584,240	1,413,877
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	5,334,060	4,603,911
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	230,644	211,730
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	94,683	78,803
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 575,667	$ 792,936