Liabilities, Commitments and Contingencies - Narrative (Details) $ in Millions	3 Months Ended					12 Months Ended			84 Months Ended
	Dec. 31, 2024 USD ($) aircraft	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($) aircraft	Sep. 30, 2018 USD ($) aircraft	Dec. 31, 2024 USD ($) aircraft	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2016 USD ($) lot aircraft	Dec. 31, 2018 USD ($) simulator aircraft	Dec. 31, 2011 lot aircraft tanker
Loss Contingencies [Line Items]
Amount by which estimated range of reasonably possible remediation costs exceeded recorded liabilities	$ 1,002					$ 1,002	$ 1,030
Contingent liabilities on outstanding letters of credit agreements and surety bonds	2,991					2,991	4,548
Cash surrender value of life insurance policies	342					342	360
Total value of loans against underlying life insurance policies	314					314	334
Government assistance, liability	$ 40					$ 40
Government Assistance, Liability, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities					Other long-term liabilities
Offsetting capital lease obligation and IRB asset	$ 355					$ 355	333
Capital investment, amount	$ 500					$ 500
Number of commercial aircraft | aircraft	2					2
Severance costs	$ 295
Employee Severance
Loss Contingencies [Line Items]
Restructuring reserve	287					$ 287
VC-25B
Loss Contingencies [Line Items]
Contract value	4,000					4,000
Increase (decrease) in earnings from operations due to change in accounting estimate.	(129)		$ (250)			(379)	(482)
KC-46A Tanker
Loss Contingencies [Line Items]
Revenue from contract with customer, excluding assessed tax	822
Contract value	29,000					29,000
Increase (decrease) in earnings from operations due to change in accounting estimate.		$ (661)	(391)	$ (128)		(2,002)	(309)
Number of generation aerial refueling tanker | tanker											4
Number of annual production lot | lot											13
Number of aircraft | aircraft									154		179
Number of low rate initial production lot | lot									11
MQ-25
Loss Contingencies [Line Items]
Contract value					$ 890
Increase (decrease) in earnings from operations due to change in accounting estimate.	$ (122)	(217)			$ 291	$ (339)	(231)
Number of aircraft | aircraft					7
Cost-type contract modification, awarded amount				$ 657
Number of additional test aircraft | aircraft				2
T-7A EMD
Loss Contingencies [Line Items]
Contract value										$ 860
Number of aircraft | aircraft	5					5				5
Number of simulator | simulator										7
Services probable of being exercised, number of aircrafts | aircraft										346
T-7A Production
Loss Contingencies [Line Items]
Increase (decrease) in earnings from operations due to change in accounting estimate.						$ (1,770)
T-7A EMD and Production
Loss Contingencies [Line Items]
Increase (decrease) in earnings from operations due to change in accounting estimate.	$ (490)	$ (908)	$ (278)	$ (94)			(275)
Commercial Crew
Loss Contingencies [Line Items]
Increase (decrease) in earnings from operations due to change in accounting estimate.						(523)	(288)
SOUTH CAROLINA
Loss Contingencies [Line Items]
Cash grants, amount									$ 346
Inventory, amortization						9	10
SOUTH CAROLINA | Accrued Liabilities
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants						87	97
SOUTH CAROLINA | Inventories
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants						64	62
SOUTH CAROLINA | Cost of Sales
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants						7	12
State of Missouri and City Of Irving, Texas
Loss Contingencies [Line Items]
Cash grants, amount						26	22	$ 30
Other receivables, net, current	$ 30					30	26
Proceeds from income tax refunds						63
State of Missouri and City Of Irving, Texas | Cost of Sales
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants						$ 30	28	21
Queensland, Australia | Cost of Sales
Loss Contingencies [Line Items]
Cash grants, amount							5	$ 7
Minimum | Supplier Finance Program, Majority of Amounts Payable
Loss Contingencies [Line Items]
Supplier finance program, payment timing, period	30 days					30 days
Maximum
Loss Contingencies [Line Items]
Supplier finance program, payment timing, period	12 months					12 months
Maximum | Supplier Finance Program, Majority of Amounts Payable
Loss Contingencies [Line Items]
Supplier finance program, payment timing, period	90 days					90 days
Financing Commitment
Loss Contingencies [Line Items]
Other commitment	$ 17,124					$ 17,124	17,003
Financing Commitment | External Credit Rating, Noninvestment Grade
Loss Contingencies [Line Items]
Other commitment	13,798					13,798
Joint Venture
Loss Contingencies [Line Items]
Other commitment	$ 261					$ 261
Other commitment, period	8 years					8 years
Total Contractual Trade in Value Maximum | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment	$ 1,393					$ 1,393	1,415
Net Amounts Payable to Customers Related to Probable Contractual Trade-in Commitments | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment	275					275	407
Probable Contractual Trade in Value | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment	270					270	$ 407
Contingent on Customer Negotiations
Loss Contingencies [Line Items]
737 MAX customer concessions and other considerations	92					92
Cash Payments to Customers
Loss Contingencies [Line Items]
737 MAX customer concessions and other considerations	124					124
Alaska Airlines 737-9 Accident And 737-9 Grounding
Loss Contingencies [Line Items]
Revenue from contract with customer, excluding assessed tax						443
Capitalized Precontract Costs | KC-46A Tanker
Loss Contingencies [Line Items]
Capitalized precontract costs	85					85
Capitalized Precontract Costs | T-7A Production
Loss Contingencies [Line Items]
Capitalized precontract costs	315					315
Capitalized Precontract Costs | Commercial Crew
Loss Contingencies [Line Items]
Capitalized precontract costs	398					398
Potential Termination Liabilities | KC-46A Tanker
Loss Contingencies [Line Items]
Capitalized precontract costs	132					132
Potential Termination Liabilities | T-7A Production
Loss Contingencies [Line Items]
Capitalized precontract costs	632					632
Potential Termination Liabilities | Commercial Crew
Loss Contingencies [Line Items]
Capitalized precontract costs	$ 150					$ 150