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Trade and other receivables, net (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Trade and other receivables, net    
Billed $ 158 $ 181
Unbilled 111 95
Total trade receivables 269 276
Orbital receivables, current portion 49 49
Other 1 3
Allowance for doubtful accounts (1) (1)
Total trade and other receivables, net $ 318 $ 327