Liabilities, Commitments and Contingencies - Narrative (Details) $ in Millions	3 Months Ended		12 Months Ended		84 Months Ended
	Dec. 31, 2023 USD ($) aircraft	Sep. 30, 2019 USD ($)	Dec. 31, 2023 USD ($) aircraft	Dec. 31, 2022 USD ($) lot	Dec. 31, 2016 USD ($) aircraft lot	Dec. 31, 2019 aircraft	Dec. 31, 2018 USD ($) simulator aircraft	Dec. 31, 2011 tanker lot
Loss Contingencies [Line Items]
Amount by which estimated range of reasonably possible remediation costs exceeded recorded liabilities	$ 1,030		$ 1,030	$ 1,058
Contingent liabilities on outstanding letters of credit agreements and surety bonds	4,548		4,548	5,070
Cash surrender value of life insurance policies	360		360	376
Total value of loans against underlying life insurance policies	334		334	346
Offsetting capital lease obligation and IRB asset	$ 333		$ 333	271
Number of commercial aircraft | aircraft	2		2
VC-25B
Loss Contingencies [Line Items]
Contract value	$ 4,000		$ 4,000
Increase (decrease) in earnings from operations due to change in accounting estimate.	(482)			(1,452)
KC-46A Tanker
Loss Contingencies [Line Items]
Contract value	$ 27,000		27,000
Number of annual production lot | lot								13
Increase (decrease) in earnings from operations due to change in accounting estimate.			$ (309)	(1,374)
Number of generation aerial refueling tanker | tanker								4
Number of aircraft | aircraft	179		179		139
Number of low rate initial production lot | lot					10
KC-46A Tanker | Capitalized Precontract Costs
Loss Contingencies [Line Items]
Capitalized precontract costs	$ 125		$ 125
KC-46A Tanker | Potential Termination Liabilities
Loss Contingencies [Line Items]
Capitalized precontract costs	48		48
MQ-25
Loss Contingencies [Line Items]
Contract value		$ 890
Increase (decrease) in earnings from operations due to change in accounting estimate.		$ 291	(231)	(579)
Number of aircraft | aircraft						7
T-7A EMD
Loss Contingencies [Line Items]
Contract value							$ 860
Increase (decrease) in earnings from operations due to change in accounting estimate.				$ (203)
Number of aircraft | aircraft							5
Number of simulator | simulator							7
T-7A Production
Loss Contingencies [Line Items]
Number of annual production lot | lot				11
Increase (decrease) in earnings from operations due to change in accounting estimate.			(275)	$ (552)
T-7A Production | Capitalized Precontract Costs
Loss Contingencies [Line Items]
Capitalized precontract costs	185		185
T-7A Production | Potential Termination Liabilities
Loss Contingencies [Line Items]
Capitalized precontract costs	249		249
Commercial Crew
Loss Contingencies [Line Items]
Increase (decrease) in earnings from operations due to change in accounting estimate.			(288)	(288)
Commercial Crew | Capitalized Precontract Costs
Loss Contingencies [Line Items]
Capitalized precontract costs	226		226
Commercial Crew | Potential Termination Liabilities
Loss Contingencies [Line Items]
Capitalized precontract costs	160		160
SOUTH CAROLINA
Loss Contingencies [Line Items]
Cash grants, amount					$ 346
Inventory, amortization			10	11
SOUTH CAROLINA | Accrued Liabilities
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants			97	106
SOUTH CAROLINA | Inventories
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants			62	64
SOUTH CAROLINA | Cost of Sales
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants			12	5
State of Missouri and City Of Irving, Texas
Loss Contingencies [Line Items]
Cash grants, amount			22	30
Other receivables, net, current	26		26	20
Proceeds from income tax refunds			60
State of Missouri and City Of Irving, Texas | Cost of Sales
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants			28	21
Queensland, Australia
Loss Contingencies [Line Items]
Maximum eligible cash grants, amount			62
Tax refunds, clawback amount			4
Queensland, Australia | Cost of Sales
Loss Contingencies [Line Items]
Cash grants, amount			5	7
Supply Chain Financing
Loss Contingencies [Line Items]
Accounts payable, trade	$ 2,900		$ 2,900	2,500
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	$ 17,003		$ 17,003	16,105
Joint Venture
Loss Contingencies [Line Items]
Other commitment	$ 264		$ 264
Other commitment, period	9 years		9 years
Total Contractual Trade in Value Maximum | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment	$ 1,415		$ 1,415	1,117
Net Amounts Payable to Customers Related to Probable Contractual Trade-in Commitments | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment	407		407	286
Probable Contractual Trade in Value | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment	407		407	$ 286
Contingent on Customer Negotiations
Loss Contingencies [Line Items]
737 MAX customer concessions and other considerations	100		100
Cash Payments to Customers
Loss Contingencies [Line Items]
737 MAX customer concessions and other considerations	$ 600		$ 600