Commitments and Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014 ViaSat Lawsuit [Member] Indemnification Agreement [Member] Sale of SS/L [Member]	Jun. 30, 2013 Globalstar do Brasil S.A. [Member]	Sep. 30, 2013 Globalstar do Brasil S.A. [Member]	Mar. 31, 2014 Globalstar do Brasil S.A. [Member]	Dec. 31, 2013 Globalstar do Brasil S.A. [Member]	Mar. 31, 2013 Globalstar do Brasil S.A. [Member]	Mar. 31, 2014 Loral Change of Control [Member] ViaSat Lawsuit [Member] Indemnification Agreement [Member] Sale of SS/L [Member]
Contingencies And Commitments [Line Items]
Loss Contingency, Range of Possible Loss, Maximum							$ 200
Loss Contingency, Estimate of Possible Loss						4.8
Loss Contingency Accrual				1.3	1.3
Loss contingency cash payment		3.7
Loss Contingency Accrual, Period Increase (Decrease)			3.7
Loss Contingency, Damages Awarded, Value	$ 283