Receivables, net, Contract Assets and Contract Liabilities - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
U.S. government receivables	$ 1,400,000,000
Receivables from other governments and commercial customers	2,132,000,000	$ 2,505,000,000
Contract assets, progress payments	50,500,000,000	47,000,000,000
Increase in contract assets	865,000,000	1,739,000,000	$ 1,034,000,000
Impairment loss	0	0
Increase in contract liability	702,000,000	381,000,000	562,000,000
Liability, revenue recognized	5,100,000,000	$ 4,800,000,000	$ 4,500,000,000
Other Governments and Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables from other governments and commercial customers	$ 749,000,000