Liabilities, Commitments and Contingencies - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended		84 Months Ended
	Sep. 30, 2018 USD ($)	Dec. 31, 2022 USD ($) mission aircraft	Dec. 31, 2018 USD ($) lot simulator aircraft	Dec. 31, 2016 USD ($) lot aircraft	Dec. 31, 2021 USD ($)	Dec. 31, 2011 tanker lot aircraft
Loss Contingencies [Line Items]
737 MAX grounding customer concessions and other considerations		$ 1,864			$ 2,940
Amount by which estimated range of reasonably possible remediation costs exceeded recorded liabilities		1,058			1,094
Contingent liabilities on outstanding letters of credit agreements and surety bonds		5,070			3,634
Cash surrender value of life insurance policies		376			374
Total value of loans against underlying life insurance policies		346			360
Offsetting capital lease obligation and IRB asset		$ 271
Number of commercial aircraft | aircraft		2
SOUTH CAROLINA
Loss Contingencies [Line Items]
Cash grants, amount				$ 346
Inventory, amortization		$ 11
SOUTH CAROLINA | Accrued Liabilities
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants		106
SOUTH CAROLINA | Inventories
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants		64
SOUTH CAROLINA | Cost of Sales
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants		5
State of Missouri And City Of Irving, Texas
Loss Contingencies [Line Items]
Cash grants, amount		30
Proceeds from income tax refunds		56
Other receivables, net, current		20
State of Missouri And City Of Irving, Texas | Cost of Sales
Loss Contingencies [Line Items]
Income tax (expense) benefit, continuing operations, government grants		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		7
VC-25B
Loss Contingencies [Line Items]
Contract value		4,300
Increase (decrease) in earnings from operations due to change in accounting estimate.		1,452
KC-46A Tanker
Loss Contingencies [Line Items]
Contract value		21,000
Number of generation aerial refueling tanker | tanker						4
Number of annual production lot | lot						13
Number of aircraft | aircraft				109		179
Number of low rate initial production lot | lot				8
Increase (decrease) in earnings from operations due to change in accounting estimate.		1,374
KC-46A Tanker | Capitalized Precontract Costs
Loss Contingencies [Line Items]
Capitalized precontract costs		209
KC-46A Tanker | Potential Termination Liabilities
Loss Contingencies [Line Items]
Capitalized precontract costs		292
MQ-25
Loss Contingencies [Line Items]
Contract value	$ 890
Number of aircraft | aircraft			7
Increase (decrease) in earnings from operations due to change in accounting estimate.	$ 291	579
T-7A EMD
Loss Contingencies [Line Items]
Contract value			$ 860
Number of aircraft | aircraft			5
Increase (decrease) in earnings from operations due to change in accounting estimate.		203
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.		552	$ 400
T-7A Production | Capitalized Precontract Costs
Loss Contingencies [Line Items]
Capitalized precontract costs		56
T-7A Production | Potential Termination Liabilities
Loss Contingencies [Line Items]
Capitalized precontract costs		283
Commercial Crew
Loss Contingencies [Line Items]
Increase (decrease) in earnings from operations due to change in accounting estimate.		$ 288
Number of post certification mission | mission		3
Number of future post certification mission | mission		3
Commercial Crew | Capitalized Precontract Costs
Loss Contingencies [Line Items]
Capitalized precontract costs		$ 180
Commercial Crew | Potential Termination Liabilities
Loss Contingencies [Line Items]
Capitalized precontract costs		159
Financing Commitment
Loss Contingencies [Line Items]
Other commitment		16,105			12,905
Joint Venture
Loss Contingencies [Line Items]
Other commitment		$ 270
Other commitment, period		5 years
Total Contractual Trade in Value Maximum | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment		$ 1,117			612
Net Amounts Payable to Customers Related to Probable Contractual Trade-in Commitments | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment		286			283
Probable Contractual Trade in Value | Commercial Aircraft Commitments
Loss Contingencies [Line Items]
Other commitment		286			$ 283
Within Next Fiscal Year
Loss Contingencies [Line Items]
Changes in estimates		100
Future Years
Loss Contingencies [Line Items]
Changes in estimates		600
Contracted Customer Concessions and Other Liabilities
Loss Contingencies [Line Items]
737 MAX grounding customer concessions and other considerations		1,600
Contingent on Customer Negotiations
Loss Contingencies [Line Items]
737 MAX grounding customer concessions and other considerations		300
Lower Customer Delivery Payments
Loss Contingencies [Line Items]
737 MAX grounding customer concessions and other considerations		800
Cash Payments to Customers
Loss Contingencies [Line Items]
737 MAX grounding customer concessions and other considerations		700
Customer Concessions
Loss Contingencies [Line Items]
737 MAX grounding customer concessions and other considerations		$ 100