Inventories (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Inventories [Line Items]
Long-term contracts in progress	$ 872	$ 823
Commercial spare parts, used aircraft, general stock materials and other	9,845	10,739
787 and 777X reach-forward losses	880	942	$ 111
Airplane Program 787 [Member]
Inventories [Line Items]
Deferred production costs	11,693	14,976
Supplier advances	1,907	1,865
Unamortized tooling and other non-recurring costs	1,815	1,863
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	9,024
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	4,484
787 and 777X reach-forward losses	(3,460)
Airplane Program 737 [Member]
Inventories [Line Items]
Deferred production costs	1,296	2,159
Unamortized tooling and other non-recurring costs	617	480
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	1,906
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	7
Airplane Program 777x [Member]
Inventories [Line Items]
Unamortized tooling and other non-recurring costs	3,521	3,295
787 and 777X reach-forward losses		(6,493)
Inventory, work in process	3,363	1,727
Capitalized Precontract Costs [Member]
Inventories [Line Items]
Inventory subject to uncertainty	648	733
Early Issue Sales Consideration [Member]
Inventories [Line Items]
Inventory subject to uncertainty	$ 3,290	$ 2,992