Property And Equipment, Net (Property And Equipment, Net (Including Assets Held Under Capital Leases)) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 4,709,036	$ 4,250,861
Less: accumulated depreciation	(1,946,619)	(1,672,417)
Property and equipment, net	2,762,417	2,578,444
Towers and Related Components [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	4,194,375	3,821,482
Construction-In-Process [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	35,855	24,275
Furniture, Equipment and Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	51,832	40,274
Land, Buildings, and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 426,974	$ 364,830