Property and Equipment, Net (Property and Equipment, Net (Including Assets Held Under Capital Leases)) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 5,957,171	$ 5,985,780
Less: accumulated depreciation	(3,298,282)	(3,191,178)
Property and equipment, net	2,658,889	2,794,602
Towers and Related Components [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	5,122,198	5,164,104
Construction-In-Process [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	33,046	33,644
Furniture, Equipment and Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	50,247	51,654
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 751,680	$ 736,378