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Related Party Transactions (Details)			1 Months Ended									3 Months Ended		9 Months Ended
Related Party Transactions (Details)	Feb. 28, 2017	Feb. 01, 2017 USD ($)	Feb. 28, 2022	Dec. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Nov. 30, 2016	Jul. 31, 2016	Aug. 31, 2015	Dec. 31, 2012	Oct. 31, 2012	Sep. 30, 2018 USD ($) transponder	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) transponder	Sep. 30, 2017 USD ($)	Aug. 31, 2017	May 31, 2017	Feb. 28, 2013 transponder	May 31, 2012	Mar. 31, 2012	Sep. 30, 2010 USD ($)	Dec. 31, 2009	Sep. 30, 2009 transponder	Nov. 30, 2008 transponder
Related party transactions
Contribution of EchoStar XIX satellite															$ 369,263,000
Contribution of Property															219,662,000
Transfer of launch service contracts to EchoStar															145,114,000
Ciel \| Satellite Capacity Lease Agreement [Member]
Related party transactions
Lessee, Operating Lease, Term of Contract																			10 years
Additional Paid-In Capital
Related party transactions
Contribution of EchoStar XIX satellite															369,263,000
One-year LIBOR \| Related-Party Advances \| Minimum
Related party transactions
Variable interest rates														1.00%
One-year LIBOR \| Related-Party Advances \| Maximum
Related party transactions
Variable interest rates														3.00%
EchoStar
Related party transactions
Related Party Transaction, Expenses from Transactions with Related Party												$ 4,500,000	$ 5,700,000	$ 14,100,000	17,200,000
Required minimum notice for termination of individual service														30 days
EchoStar \| DBS Transponder Lease [Member]
Related party transactions
Revenue from Related Parties												5,800,000	5,800,000	$ 17,500,000	17,500,000
Receivables from related parties				$ 7,600,000								5,900,000		5,900,000
EchoStar \| Construction Management Services [Member]
Related party transactions
Related Party Transaction, Expenses from Transactions with Related Party												300,000	0	800,000	0
EchoStar Mobile Limited
Related party transactions
Revenue from Related Parties												$ 4,900,000	$ 0	$ 13,700,000	$ 0
DISH Network \| Satellite And Tracking Stock Transaction \| Hughes Retail Preferred Tracking Stock \| Hughes Retail Group
Related party transactions
Percentage of economic interest in the Hughes Retail Group	80.00%
DISH Network \| TT&C Agreement
Related party transactions
Related Party Transactions Agreement Termination Required Notice Period from Related Party, Minimum														12 months
Agreement term				1 month			1 year
DISH Network \| TerreStar Agreement
Related party transactions
Related Party Transactions Agreement Termination Required Notice Period from Related Party, Minimum														21 days
Required minimum notice for termination of agreement														90 days
DISH Network \| Hughes Broadband Distribution Agreement
Related party transactions
Required minimum notice for termination of agreement														180 days
Agreement term											5 years
Automatic renewal period														1 year
DISH Network \| DBSD North America Agreement
Related party transactions
Related Party Transactions Agreement Termination Required Notice Period from Related Party, Minimum														120 days
Required minimum notice for termination of agreement														21 days
Ownership interest acquired by related party																				100.00%
DISH Network \| DBSD North America Agreement \| Subsequent Event
Related party transactions
Related Party Transactions Agreement Termination Required Notice Period from Related Party, Minimum			180 days
Automatic renewal period			5 years
DISH Network \| RUS Implementation Agreement
Related party transactions
Grants receivable by related party																					$ 14,100,000
DISH Network \| Amended and Restated Professional Services Agreement [Member]
Related party transactions
Required minimum notice for termination of agreement														60 days
Automatic renewal period														1 year
Required minimum notice for termination of individual service														30 days
DISH Network \| Collocation and Antenna Space Agreements
Related party transactions
Required minimum notice period for termination of agreement by the reporting entity														180 days
Related Party Transactions Agreement, Renewal Option, Term									4 years					3 years
DISH Network \| Minimum \| Collocation and Antenna Space Agreements
Related party transactions
Related Party Transactions Agreement, Renewal Notice Required by Reporting Entity														90 days
DISH Network \| Maximum \| Collocation and Antenna Space Agreements
Related party transactions
Related Party Transactions Agreement, Renewal Notice Required by Reporting Entity														120 days
EchoStar XIX \| EchoStar
Related party transactions
Contribution of Property		$ 514,400,000
Deferred Tax Liabilities, Deferred Expense		165,100,000
EchoStar XIX \| EchoStar \| Additional Paid-In Capital
Related party transactions
Contribution of EchoStar XIX satellite		$ 349,300,000
EchoStar XXI [Member] \| EchoStar Operating \| Other Noncurrent Assets
Related party transactions
Transfer of launch service contracts to EchoStar					$ (83,300,000)
EchoStar XXI [Member] \| EchoStar Operating \| Additional Paid-In Capital
Related party transactions
Transfer of launch service contracts to EchoStar					$ (83,300,000)
EchoStar XXIII [Member] \| EchoStar Operating \| Other Noncurrent Assets
Related party transactions
Transfer of launch service contracts to EchoStar						$ (61,800,000)
EchoStar XXIII [Member] \| EchoStar Operating \| Additional Paid-In Capital
Related party transactions
Transfer of launch service contracts to EchoStar						$ (61,800,000)
EchoStar XVI \| DISH Network \| Satellite Capacity Lease Agreement [Member]
Related party transactions
Lessor, Operating Lease, Term of Contract																						10 years
Lessor, Operating Lease, Renewal Term								1 year									5 years
Related Party Transactions Agreement Term from Commencement of Service Date										4 years
Renewal option reduction in years								1 year
Additional term of renewal option														5 years
Nimiq5 [Member] \| Telesat \| Satellite Capacity Lease Agreement [Member]
Related party transactions
Lessee, Operating Lease, Term of Contract																							15 years
Number of DBS transponders available \| transponder																							32
Nimiq5 [Member] \| DISH Network \| Satellite Capacity Lease Agreement [Member]
Related party transactions
Number of DBS transponders available \| transponder																							32
QuetzSat-1 [Member] \| SES Latin America \| Satellite Capacity Lease Agreement [Member]
Related party transactions
Lessee, Operating Lease, Term of Contract																								10 years
Related Party Transactions Number of DBS Transponders Expected to Receive Services Per Agreement \| transponder																								32
QuetzSat-1 [Member] \| EchoStar \| DBS Transponder Lease [Member]
Related party transactions
Number of DBS transponders currently receiving services \| transponder												8		8
QuetzSat-1 [Member] \| DISH Network \| Satellite Capacity Lease Agreement [Member]
Related party transactions
Number of DBS transponders currently receiving services \| transponder																								24
Number of DBS transponders currently receiving services subleased back from related party \| transponder																		5
Related Party Transactions, Lessor, Operating Lease, Real Estate [Member] \| DISH Network \| Cheyenne Lease Agreement [Member]
Related party transactions
Related Party Transactions, Required Minimum Notice Period for Termination of Agreement After Lease Extension														30 days
Related Party Transactions, Lessee, Operating Lease, Real Estate \| DISH Network \| American Fork Occupancy License Agreement [Member]
Related party transactions
Lessee, Operating Lease, Term of Contract																5 years
6 1/2% Senior Secured Notes due 2019
Related party transactions
Interest rate				6.50%								6.50%		6.50%
5 1/4% Senior Secured Notes due 2026
Related party transactions
Interest rate				5.25%								5.25%		5.25%