v2.4.0.8

Summary of Significant Accounting Policies (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 years | Dec. 31, 2011
Development in Process | $ 52,200,000 |  | $ 43,300,000 |  |
Increase (decrease) in restricted cash for operating activities | (1,637,000) |  | 11,475,000 |  | (17,902,000)
Increase (decrease) in restricted cash for investing activities | 8,067,000 |  | (46,282,000) | [1] | (15,430,000)
Net cash provided by (used from) financing activities | 385,982,000 | [2] | (288,763,000) | [2] | 1,979,000
Useful life of site rental contracts and customer relationships (years) | 20 years |  |  |  |
Revenue recognition, non-cancelable lease term, minimum (years) |  |  | 5 |  |
Revenue recognition, non-cancelable lease term, maximum (years) |  |  | 15 |  |
Portion of company site rental costs that are ground lease expenses | 0.667 |  |  |  |
Ground Lease Agreement Initial Term | 5 years |  |  |  |
Percentage of tax position that is likely of being realized upon ultimate settlement | 50.00% |  |  |  |
Asset write-down charges | 14,863,000 |  | 15,548,000 |  | 22,285,000
Maximum [Member] |  |  |  |  |
Original Maturities of Highly Liquid Investments | 3 months |  |  |  |
Wireless Infrastructure [Member] |  |  |  |  |
Property, plant and equipment estimated useful life, maximum (years) | 20 years |  |  |  |
Wireless Infrastructure [Member] | Maximum [Member] |  |  |  |  |
Property, plant and equipment estimated useful life, maximum (years) | 20 years |  |  |  |
Acquired [Member] |  |  |  |  |
Increase (decrease) in restricted cash for investing activities |  |  | 46,300,000 |  |
Restricted Cash Held By Trustee [Member] [Member] |  |  |  |  |
Net cash provided by (used from) financing activities |  |  | 316,600,000 |  |
Property, Plant and Equipment [Member] |  |  |  |  |
Asset write-down charges | $ 10,200,000 |  | $ 12,000,000 |  | $ 16,100,000
[1] | Inclusive of $46.3 million of acquired restricted cash.
[2] | Inclusive of $316.6 million of cash held by the trustee as of December 31, 2012 and subsequently released to retire the 7.75% Secured Notes in January 2013.

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