Unbilled Receivables, Net (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled receivable, net of progress and performance-based payments received	$ 5,710	$ 6,002
Allowance for expected credit losses	(17)	(19)
Unbilled receivables, net	5,693	5,983
US Government [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled receivables	23,655	23,304
Government Contract Receivable, Progress Payment Offset	18,321	17,664
Unbilled receivable, net of progress and performance-based payments received	5,334	5,640
International and Other Customers [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled receivables	1,720	1,822
Progress and performance-based payments received	(1,344)	(1,460)
Unbilled receivable, net of progress and performance-based payments received	$ 376	$ 362