PROPERTY AND EQUIPMENT (Additional Information) (Details) In Millions, unless otherwise specified	1 Months Ended		9 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2012 Thales Alenia Space [Member] EUR (€)	Sep. 30, 2012 First Generation Satellites [Member] USD ($)	Sep. 30, 2012 Capital Expenditure Contracted [Member] USD ($)	Sep. 30, 2012 Capitalized Cost [Member] USD ($)
Property Plant And Equipment Disclosure [Line Items]
Costs incurred under capital expenditure contracts				$ 945.6	$ 940.1
Costs capital expenditure contracts, expensed	5.5
Contracts payable and accrued expenses	23.8
Purchase commitment amount		149.9
Loss on disposition of property			$ (7.1)