Revenue from Contracts with Customers - Estimate at Completion Adjustments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Change in Accounting Estimate [Line Items]
Revenue	$ 634	$ 720	$ 1,873	$ 2,059
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate [Line Items]
Revenue	$ (11)	$ (11)	$ (22)	$ (20)
Total % of Revenue	1.80%	1.60%	1.20%	1.00%