Contracts with Customers - Schedule of Unbilled Receivables and Claims) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Contracts with Customers [Abstract]
Contract with customers, unbilled, current	$ 6,478	$ 5,870
Contract with customers, expected to be collected after one year	2,179	2,841
Contract with customers, less valuation allowance	(23)	(91)	$ (129)
Total unbilled receivables	8,634	8,620
Contracts with customers, claims, current		4
Contract with customers, claims, expected to be collected after one year	16	11
Total claims receivables	$ 16	$ 15