Related Party Transactions (Details 2) - DISH Network $ in Millions	1 Months Ended						6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2016 USD ($)	Oct. 31, 2016 parcel	Dec. 31, 2011 USD ($)	Apr. 30, 2011 USD ($) installment	Jun. 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%
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
Subsequent Event | Hughes Broadband Master Services Agreement
Related party transactions
Required minimum notice for termination of agreement	90 days
EchoStar Technologies Business | Share Exchange Agreement
Related party transactions
Ownership interest acquired by related party								100.00%