Liabilities, Commitments and Contingencies - Narrative (Details) $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($) aircraft lot	Mar. 31, 2024 USD ($) aircraft	Jun. 30, 2023 USD ($)	Sep. 30, 2018 USD ($) aircraft	Jun. 30, 2024 USD ($) aircraft lot	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2018 USD ($) simulator lot aircraft	Dec. 31, 2011 tanker aircraft lot
Commitments And Contingencies [Line Items]
Environmental loss contingency, operation and maintenance period, maximum					30 years
Loss contingency, range of possible loss, portion not accrued	$ 964				$ 964		$ 1,030
Contingent liabilities on outstanding letters of credit agreements and surety bonds	3,184				3,184		4,548
Supplier finance program, obligation	2,700				2,700		2,900
Increase to Loss from operations	(1,334)		$ (830)		(1,700)	$ (1,348)
Number of annual production lot | lot									13
VC-25B
Commitments And Contingencies [Line Items]
Contract value	$ 4,000				$ 4,000
Number of commercial aircraft | aircraft	2				2
Increase to Loss from operations	$ (250)						(482)
KC-46A Tanker
Commitments And Contingencies [Line Items]
Contract value	27,000				$ 27,000
Increase to Loss from operations	$ (391)	$ (128)					(309)
Number of generation aerial refueling tanker | tanker									4
Number of aircraft | aircraft	139				139				179
Number of low rate initial production lot | lot	10				10
MQ-25
Commitments And Contingencies [Line Items]
Contract value				$ 890
Increase to Loss from operations				$ 291			(231)
Number of aircraft | aircraft				7
Cost-type contract modification, awarded amount		$ 657
Number of additional test aircraft | aircraft		2
T-7A EMD
Commitments And Contingencies [Line Items]
Contract value								$ 860
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]
Number of annual production lot | lot								11
T-7A EMD and Production
Commitments And Contingencies [Line Items]
Increase to Loss from operations	$ (278)	$ (94)					(275)
Commercial Crew
Commitments And Contingencies [Line Items]
Increase to Loss from operations	$ (125)						(288)
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
Commercial Aircraft Commitments | Total Contractual Trade-In Commitment
Commitments And Contingencies [Line Items]
Other commitment	$ 1,375				$ 1,375		1,415
Commercial Aircraft Commitments | Net Amounts Payable to Customers Related to Probable Contractual Trade-In Commitments
Commitments And Contingencies [Line Items]
Other commitment	434				434		407
Commercial Aircraft Commitments | Fair Value of Trade in Value of Aircraft
Commitments And Contingencies [Line Items]
Other commitment	434				434		407
Financing Commitment
Commitments And Contingencies [Line Items]
Other commitment	17,356				17,356		$ 17,003
Financing Commitment | External Credit Rating, Non Investment Grade
Commitments And Contingencies [Line Items]
Other commitment	14,030				14,030
Joint Venture
Commitments And Contingencies [Line Items]
Other commitment	$ 262				$ 262
Other commitment, period	9 years				9 years
2023
Commitments And Contingencies [Line Items]
Changes in estimates					$ 208
Contingent on Customer Negotiations
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	$ 92				92
Alaska Airlines 737-9 Accident and 737-9 Grounding
Commitments And Contingencies [Line Items]
Revenue from contract with customer, excluding assessed tax		$ 443
Capitalized Precontract Costs | KC-46A Tanker
Commitments And Contingencies [Line Items]
Capitalized precontract costs	139				139
Capitalized Precontract Costs | T-7A Production
Commitments And Contingencies [Line Items]
Capitalized precontract costs	258				258
Capitalized Precontract Costs | Commercial Crew
Commitments And Contingencies [Line Items]
Capitalized precontract costs	238				238
Potential Termination Liabilities | KC-46A Tanker
Commitments And Contingencies [Line Items]
Capitalized precontract costs	205				205
Potential Termination Liabilities | T-7A Production
Commitments And Contingencies [Line Items]
Capitalized precontract costs	451				451
Potential Termination Liabilities | Commercial Crew
Commitments And Contingencies [Line Items]
Capitalized precontract costs	$ 148				$ 148