Property And Equipment, Net (Property And Equipment, Net (Including Assets Held Under Capital Leases)) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 4,867,111	$ 4,709,036
Less: accumulated depreciation	(2,079,647)	(1,946,619)
Property and equipment, net	2,787,464	2,762,417
Towers and Related Components [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	4,285,661	4,194,375
Construction-In-Process [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	32,150	35,855
Furniture, Equipment and Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	54,329	51,832
Land, Buildings, and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 494,971	$ 426,974