Operating Property And Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Land	$ 235,272	$ 217,885
Buildings and improvements	873,728	822,931
Machinery and equipment	845,460	797,084
Other	125,377	131,181
Gross	2,079,837	1,969,081
Accumulated depreciation	(1,236,024)	(1,192,377)
Total	843,813	776,704
Operating equipment depreciation expense	$ 101,000	$ 94,000	$ 88,000
Minimum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Minimum | Other
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Maximum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	40 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10 years
Maximum | Other
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10 years