Accounts Receivable, Net (Schedule of Accounts Receivable, Net) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Accounts Notes And Loans Receivable [Line Items]
U.S. government contracts (including foreign military sales)	$ 1,371	$ 1,204
Allowance for expected credit losses	(452)	(475)
Accounts receivable, net	9,108	9,661
Other Customer
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable, Other Customers	$ 8,189	$ 8,932