Income Taxes - Significant Components of Deferred Tax Assets Net of Deferred Tax Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Valuation Allowance [Line Items]
Inventory and long-term contract methods of income recognition	$ (4,369)	$ (3,827)
Fixed assets, intangibles and goodwill	(1,641)	(1,657)
Research expenditures	1,464
Pension benefits	1,146	1,739
Other employee benefits	1,095	991
Accrued expenses and reserves	933	763
Other postretirement benefit obligations	660	913
737 MAX customer concessions and other considerations	425	682
Other	179	227
Gross deferred tax assets/(liabilities) before valuation allowance	2,995	2,282
Valuation allowance	(3,162)	(2,423)
Net deferred tax assets/(liabilities) after valuation allowance	(167)	(141)
Federal Tax Authority
Valuation Allowance [Line Items]
Federal and state net operating loss, credit, interest and other carryovers	2,082	1,522
Deferred tax asset for net operating loss and credit carryovers each year through December 31, 2042	742
Deferred tax asset for net operating loss and credit carryovers indefinitely	1,340
State Tax Authority
Valuation Allowance [Line Items]
Federal and state net operating loss, credit, interest and other carryovers	1,021	$ 929
Deferred tax asset for net operating loss and credit carryovers each year through December 31, 2042	514
Deferred tax asset for net operating loss and credit carryovers indefinitely	$ 507