Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 9 Months Ended |
|---|---|---|
Aug. 31, 2010 | Sep. 30, 2011
year
satellite
customer
unit
month | |
| Revenue Recognition | ||
| Period of service contract under consumer rental program (in months) | 24 | |
| Reward from the U.S. Government as the only national provider of high-speed satellite broadband service | $ 59 | |
| Capitalized Software Costs | ||
| Estimated useful life of capitalized software costs, maximum (in years) | 5 |