Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2018	Dec. 31, 2021	Dec. 31, 2020
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	$ 2,400
Loss Contingency, Range of Possible Loss, Portion Not Accrued	1,094			$ 1,094
Letters of Credit Outstanding, Amount	3,647			3,634
Increase/(Decrease) in (Loss)/earnings from operations due to change in accounting estimate	(1,130)	$ (176)
Financing Commitment
Commitments And Contingencies [Line Items]
Other Commitment	12,761			12,905
Joint venture
Commitments And Contingencies [Line Items]
Other Commitment	244
Total Contractual Trade-In Commitment | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other Commitment	1,289			612
Net Amounts Payable to Customers Related to Probable Contractual Trade-In Commitments | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other Commitment	379			283
Fair Value of Trade In Value of Aircraft | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other Commitment	379			283
VC-25B
Commitments And Contingencies [Line Items]
Contract Value	4,300
Increase/(Decrease) in (Loss)/earnings from operations due to change in accounting estimate	660
Cumulative Increase/(Decrease) in Earnings from Operations due to Change in Accounting Estimate	1,146
T-7A EMD
Commitments And Contingencies [Line Items]
Contract Value	860
Increase/(Decrease) in (Loss)/earnings from operations due to change in accounting estimate	67
T-7A Production
Commitments And Contingencies [Line Items]
Increase/(Decrease) in (Loss)/earnings from operations due to change in accounting estimate	300		$ 400
Cumulative Increase/(Decrease) in Earnings from Operations due to Change in Accounting Estimate	700
MQ-25
Commitments And Contingencies [Line Items]
Increase/(Decrease) in (Loss)/earnings from operations due to change in accounting estimate	78		$ 291
KC-46A Tanker
Commitments And Contingencies [Line Items]
Contract Value	19,000
Increase/(Decrease) in (Loss)/earnings from operations due to change in accounting estimate	165
KC-46A Tanker | Capitalized Precontract Costs
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	276
KC-46A Tanker | Potential Termination Liabilities
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	609
Lower Customer Delivery Payments
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	800
Cash Payments To Customers
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	800
Customer Concessions
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	200
Contingent On Customer Negotiations
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	600
Contracted Customer Concessions & Other Considerations Liability [Member]
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	1,800
Within Current fiscal Year [Member]
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	600
B-737
Commitments And Contingencies [Line Items]
Abnormal Production cost.	188	568
737 MAX customer concessions and other considerations liability	$ 2,419	$ 4,370		$ 2,940	$ 5,537