Related Party Transactions (Details 2) - DISH Network $ in Millions		1 Months Ended						9 Months Ended
	Mar. 02, 2014 USD ($) satellite	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2016 USD ($)	Oct. 31, 2016 parcel	Dec. 31, 2011 USD ($)	Apr. 30, 2011 USD ($) installment	Sep. 30, 2017	Jan. 31, 2017	Oct. 01, 2013 subsidiary
TiVo vs. Dish Network and Echostar Corporation
Related party transactions
Litigation Settlement, Amount Awarded to Other Party							$ 500.0
Initial settlement amount paid							300.0
Aggregate of six annual installment amounts between 2012 and 2017							$ 200.0
Litigation settlement, number of annual installments | installment							6
Portion of the $300 million initial settlement agreement payment paid by EchoStar							$ 10.0
Estimated percentage of annual future payments payable by EchoStar							5.00%
Satellite and Tracking Stock Transaction
Related party transactions
Proceeds from issuance of Tracking Stock	$ 11.4
Hughes Broadband Master Services Agreement
Related party transactions
Agreement term			5 years
Automatic renewal period								1 year
Patent Cross-License Agreements
Related party transactions
Maximum aggregate payments required under cross license agreements						$ 10.0
Maximum additional aggregate payments required under cross license agreements if options are exercised				$ 3.0
Orange New Jersey
Related party transactions
Number of Real Estate Properties | parcel					2
Caltech
Related party transactions
Number of subsidiaries against which lawsuit was filed | subsidiary										2
EchoStar Technologies Business | Share Exchange Agreement
Related party transactions
Ownership interest acquired by related party									100.00%
EchoStar and HSSC | Satellite and Tracking Stock Transaction
Related party transactions
Related Party Transactions Number of Owned Satellites Transferred | satellite	5
Subsequent Event | Hughes Broadband Master Services Agreement
Related party transactions
Required minimum notice for termination of agreement		90 days