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Operating Segments and Concentrations of Credit Risk (Major Customers) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Weighted Average Remaining Term Of Tenant Leases |  |  | 11 years |
Percentage of the consolidated revenues | 88.00% |  | 83.00% | 83.00%
Long-Lived Assets | $ 17,921,968 |  | $ 12,979,184 |
AT&T [Member] |  |  |  |
Percentage of the consolidated revenues | 23.00% | [1] | 15.00% | 14.00%
Sprint [Member] |  |  |  |
Percentage of the consolidated revenues | 27.00% | [2] | 28.00% | 24.00%
Verizon Wireless [Member] |  |  |  |
Percentage of the consolidated revenues | 22.00% | [3] | 23.00% | 26.00%
T-Mobile [Member] |  |  |  |
Percentage of the consolidated revenues | 16.00% |  | 17.00% | 19.00%
United States [Member] |  |  |  |
Long-Lived Assets | 17,670,665 |  | 12,730,337 |
Australia [Member] |  |  |  |
Long-Lived Assets | 235,493 |  | 232,099 |
Other Countries [Member] |  |  |  |
Long-Lived Assets | $ 15,810 |  | $ 16,748 |
Sprint, excluding Clearwire [Member] |  |  |  |
Weighted Average Remaining Term Of Tenant Leases | 6 years |  |  |
Percentage of the consolidated revenues | 24.00% |  |  |
Clearwire [Member] |  |  |  |
Weighted Average Remaining Term Of Tenant Leases | 3 years |  |  |
Revenue from consolidated tenant during merger as percentage of net revenues | 2.00% |  |  |
Percentage of the consolidated revenues | 3.00% |  |  |
T-Mobile, excluding Metro PCS [Member] |  |  |  |
Weighted Average Remaining Term Of Tenant Leases | 9 years |  |  |
Percentage of the consolidated revenues | 18.00% |  |  |
Metro PCS [Member] |  |  |  |
Weighted Average Remaining Term Of Tenant Leases | 5 years |  |  |
Revenue from consolidated tenant during merger as percentage of net revenues | 2.00% |  |  |
Percentage of the consolidated revenues | 5.00% |  |  |
AT&T, excluding Leap Wireless [Member] |  |  |  |
Weighted Average Remaining Term Of Tenant Leases | 8 years |  |  |
Percentage of the consolidated revenues | 19.00% |  |  |
Leap Wireless [Member] |  |  |  |
Weighted Average Remaining Term Of Tenant Leases | 3 years |  |  |
Revenue from consolidated tenant during merger as percentage of net revenues | 1.00% |  |  |
Percentage of the consolidated revenues | 3.00% |  |  |
Sprint Clearwire Consolidation [Member] |  |  |  |
Tower count as a percentage of total towers | 7.00% |  |  |
T-Mobile Metro Consolidation [Member] |  |  |  |
Tower count as a percentage of total towers | 4.00% |  |  |
ATT Leap Wireless Consolidation [Member] |  |  |  |
Tower count as a percentage of total towers | 6.00% |  |  |
[1] | For the year ended December 31, 2013, T-Mobile and MetroPCS accounted for 18% and 5%, respectively, of consolidated net revenues. As of December 31, 2013, T-Mobile and MetroPCS are co-residents on approximately 4% of the Company's towers. The weighted-average remaining term on these tower tenant contracts with T-Mobile and MetroPCS is approximately nine years and five years , respectively. Revenue from MetroPCS on these towers represented approximately 2% of consolidated site rental revenues for the year ended December 31, 2013.
[2] | For the year ended December 31, 2013, Sprint and Clearwire accounted for 24% and 3%, respectively, of consolidated net revenues. As of December 31, 2013, Sprint and Clearwire are co-residents on approximately 7% of the Company's towers. The weighted-average remaining term on these tower tenant contracts with Sprint and Clearwire is approximately six years and three years, respectively. Revenue from Clearwire on these towers represented approximately 2% of consolidated site rental revenues for the year ended December 31, 2013.
[3] | For the year ended December 31, 2013, AT&T and Leap Wireless accounted for 19% and 3%, respectively, of consolidated net revenues. As of December 31, 2013, AT&T and Leap Wireless are co-residents on approximately 6% of the Company's towers. The weighted-average remaining term on these tower tenant contracts with AT&T and Leap Wireless is approximately eight years and three years, respectively. Revenue from Leap Wireless on these towers represented approximately 1% of consolidated site rental revenues for the year ended December 31, 2013.

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