Income Taxes (Significant Components Of Deferred Tax Assets Net Of Deferred Tax Liabilities) (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Valuation Allowance [Line Items]
Inventory and long-term contract methods of income recognition		$ (3,827)	$ (4,313)
Pension benefits		1,739	3,029
Fixed assets, intangibles and goodwill		(1,657)	(1,645)
737 MAX customer concessions and other considerations		682	1,253
Other postretirement benefit obligations		913	1,023
Other employee benefits		991	957
Accrued expenses and reserves		763	808
Other		227	(36)
Gross deferred tax assets/(liabilities) before valuation allowance		2,282	2,170
Valuation allowance		(2,423)	(3,094)
Net deferred tax (liabilities)/assets		(141)	(924)
Deferred tax assets		11,258	11,600
Deferred Tax Liabilities, Gross		8,976	9,430
Federal Tax Authority [Member]
Valuation Allowance [Line Items]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals	[1]	1,522	317
Deferred tax asset for net operating loss and credit carryovers each year through December 31, 2035		536
Deferred tax asset for net operating loss and credit carryovers indefinitely		986
State Tax Authority [Member]
Valuation Allowance [Line Items]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals		929	$ 777
Deferred tax asset for net operating loss and credit carryovers each year through December 31, 2035		453
Deferred tax asset for net operating loss and credit carryovers indefinitely		$ 476

[1] Of the deferred tax asset for federal net operating loss, credit, interest and other carryovers, $536 expires on or before December 31, 2041 and $986 may be carried over indefinitely.(2)     Of the deferred tax asset for state net operating loss, credit, interest and other carryovers, $453 expires on or before December 31, 2041 and $476 may be carried over indefinitely.