Long-term debt and interest expense, net - Interest expense on long term debts and other obligations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest expenses
Interest on long-term debt	$ 55	$ 48	$ 109	$ 93
Interest expense on advance payments from customers	1	4	3	9
Interest on orbital securitization liability	2	2	3	4
Capitalized interest	(10)	(5)	(18)	(8)
Loss from extinguishment of debt			7
Interest expense, net	$ 48	$ 49	$ 97	$ 98