Property and Equipment, Net (Property and Equipment, Net (Including Assets Held Under Capital Leases)) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 6,753,846	$ 6,685,162
Less: accumulated depreciation	(4,044,062)	(3,971,435)
Property and equipment, net	2,709,784	2,713,727
Towers and Related Assets [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	5,705,778	5,650,902
Construction-In-Process [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	83,839	77,564
Furniture, Equipment and Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	67,501	67,403
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 896,728	$ 889,293