Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment - Schedule of Construction in Progress (Details)

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Property and Equipment - Schedule of Construction in Progress (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Construction in progress $ 486 $ 412
Satellite system    
Property, Plant and Equipment [Line Items]    
Construction in progress 321 296
Terrestrial repeater network    
Property, Plant and Equipment [Line Items]    
Construction in progress 5 5
Capitalized software and hardware    
Property, Plant and Equipment [Line Items]    
Construction in progress 117 77
Other    
Property, Plant and Equipment [Line Items]    
Construction in progress $ 43 $ 34