Liabilities, Commitments and Contingencies - Narrative (Details) $ in Millions	3 Months Ended		12 Months Ended	87 Months Ended
	Mar. 31, 2023 USD ($) aircraft	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2023 USD ($) aircraft lot	Dec. 31, 2018 USD ($) lot aircraft simulator	Sep. 30, 2018 USD ($) aircraft	Dec. 31, 2017 aircraft	Dec. 31, 2011 aircraft lot tanker
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	$ 1,700			$ 1,700
Loss contingency, range of possible loss, portion not accrued	1,043		$ 1,058	1,043
Contingent liabilities on outstanding letters of credit agreements and surety bonds	5,062		5,070	5,062
Supplier finance program, obligation	2,600		2,500	$ 2,600
Increase to Loss from operations	$ 518	$ 1,130
Number of annual production lot | lot								13
Minimum | Supplier Finance Program, Majority of Amounts Payable
Commitments And Contingencies [Line Items]
Supplier finance program, payment timing, period	30 days			30 days
Maximum
Commitments And Contingencies [Line Items]
Supplier finance program, payment timing, period	12 months			12 months
Maximum | Supplier Finance Program, Majority of Amounts Payable
Commitments And Contingencies [Line Items]
Supplier finance program, payment timing, period	90 days			90 days
VC-25B
Commitments And Contingencies [Line Items]
Contract value	$ 4,300			$ 4,300
Number of commercial aircraft | aircraft	2			2
Increase to Loss from operations	$ 1,452
KC-46A Tanker
Commitments And Contingencies [Line Items]
Contract value	24,000			$ 24,000
Increase to Loss from operations	245		1,374
Number of generation aerial refueling tanker | tanker								4
Number of aircraft | aircraft							124	179
Number of low rate initial production lot | lot				9
KC-46A Tanker | Capitalized Precontract Costs
Commitments And Contingencies [Line Items]
Capitalized precontract costs	166			$ 166
KC-46A Tanker | Potential Termination Liabilities
Commitments And Contingencies [Line Items]
Capitalized precontract costs	95			95
MQ-25
Commitments And Contingencies [Line Items]
Contract value						$ 890
Increase to Loss from operations			579
Number of aircraft | aircraft						7
T-7A EMD
Commitments And Contingencies [Line Items]
Contract value					$ 860
Increase to Loss from operations			203
Number of aircraft | aircraft					5
Number of simulator | simulator					7
Services probable of being exercised, number of aircrafts | aircraft					346
T-7A Production
Commitments And Contingencies [Line Items]
Increase to Loss from operations			552
Number of annual production lot | lot					11
T-7A Production | Capitalized Precontract Costs
Commitments And Contingencies [Line Items]
Capitalized precontract costs	75			75
T-7A Production | Potential Termination Liabilities
Commitments And Contingencies [Line Items]
Capitalized precontract costs	339			339
Commercial Crew
Commitments And Contingencies [Line Items]
Increase to Loss from operations			288
Commercial Crew | Capitalized Precontract Costs
Commitments And Contingencies [Line Items]
Capitalized precontract costs	188			188
Commercial Crew | Potential Termination Liabilities
Commitments And Contingencies [Line Items]
Capitalized precontract costs	199			199
Financing Commitment
Commitments And Contingencies [Line Items]
Other commitment	15,328		16,105	15,328
Joint Venture
Commitments And Contingencies [Line Items]
Other commitment	$ 299			$ 299
Other commitment, period	5 years			5 years
Total Contractual Trade-In Commitment | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other commitment	$ 1,328		1,117	$ 1,328
Net Amounts Payable to Customers Related to Probable Contractual Trade-In Commitments | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other commitment	283		286	283
Fair Value of Trade in Value of Aircraft | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other commitment	283		$ 286	283
2023
Commitments And Contingencies [Line Items]
Changes in estimates	100
Future Years
Commitments And Contingencies [Line Items]
Changes in estimates	500
Contracted Customer Concessions & Other Considerations Liability
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	1,400			1,400
Contingent on Customer Negotiations
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	300			300
Lower Customer Delivery Payments
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	700			700
Cash Payments to Customers
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	600			600
Customer Concessions
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	$ 100			$ 100