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Trade and other receivables, net (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Trade and other receivables, net    
Billed $ 161 $ 181
Unbilled 150 95
Total trade receivables 311 276
Orbital receivables, current portion 49 49
Other 5 3
Allowance for doubtful accounts   (1)
Trade and other receivables, net $ 365 $ 327