Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Change in Contract with Customer, Asset [Abstract]
Beginning balance	$ 125	$ 117
Additions, net	34	43
Billings transferred to accounts receivable	(39)	(50)
Other	(2)	(1)
Ending balance	118	109
Change in Contract with Customer, Liability [Abstract]
Beginning balance	164	166
Additions, net	62	67
Revenue recognized from opening balance	(50)	(71)
Other	(1)	0
Ending balance	$ 175	$ 162