Related Party Transactions - DISH Network - TerreStar Agreement (Details) - TerreStar Agreement - DISH Network	1 Months Ended
Dec. 31, 2017
Related Party Transaction [Line Items]
Minimum termination notice period	21 days
Required minimum notice for termination of agreement	90 days

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration