Contracts with Customers - Schedule of Unbilled Receivables and Claims) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Contracts with Customers [Abstract]
Contract with customers, unbilled, current	$ 6,556	$ 6,348
Contract with customers, expected to be collected after one year	2,644	2,053
Contract with customers, less valuation allowance	(42)	(38)	$ (19)
Total unbilled receivables	9,158	8,363
Contracts with customers, claims, current		9
Contract with customers, claims, expected to be collected after one year	89	51
Total claims receivables	$ 89	$ 60