Liabilities, Commitments and Contingencies - Narrative (Details) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2023 USD ($) aircraft lot	Mar. 31, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) aircraft lot	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2018 USD ($) simulator aircraft lot	Sep. 30, 2018 USD ($) aircraft	Dec. 31, 2011 tanker aircraft lot
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	$ 1,500			$ 1,500
Loss contingency, range of possible loss, portion not accrued	1,045			1,045		$ 1,058
Contingent liabilities on outstanding letters of credit agreements and surety bonds	5,006			5,006		5,070
Supplier finance program, obligation	2,600			2,600		2,500
Increase to (Loss)/(decrease) to earnings from operations	$ 830		$ 411	$ 1,348	$ 1,541
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)/(decrease) to earnings from operations						1,452
KC-46A Tanker
Commitments And Contingencies [Line Items]
Contract value	$ 24,000			$ 24,000
Increase to (Loss)/(decrease) to earnings from operations		$ 245				1,374
Number of generation aerial refueling tanker | tanker									4
Number of aircraft | aircraft	124			124					179
Number of low rate initial production lot | lot	9			9
KC-46A Tanker | Capitalized Precontract Costs
Commitments And Contingencies [Line Items]
Capitalized precontract costs	$ 167			$ 167
KC-46A Tanker | Potential Termination Liabilities
Commitments And Contingencies [Line Items]
Capitalized precontract costs	143			143
MQ-25
Commitments And Contingencies [Line Items]
Contract value								$ 890
Increase to (Loss)/(decrease) to earnings from operations	68					579
Number of aircraft | aircraft								7
T-7A EMD
Commitments And Contingencies [Line Items]
Contract value							$ 860
Increase to (Loss)/(decrease) to earnings 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)/(decrease) to earnings from operations	189					552
Number of annual production lot | lot							11
T-7A Production | Capitalized Precontract Costs
Commitments And Contingencies [Line Items]
Capitalized precontract costs	97			97
T-7A Production | Potential Termination Liabilities
Commitments And Contingencies [Line Items]
Capitalized precontract costs	391			391
Commercial Crew
Commitments And Contingencies [Line Items]
Increase to (Loss)/(decrease) to earnings from operations	257					288
Commercial Crew | Capitalized Precontract Costs
Commitments And Contingencies [Line Items]
Capitalized precontract costs	189			189
Commercial Crew | Potential Termination Liabilities
Commitments And Contingencies [Line Items]
Capitalized precontract costs	198			198
Financing Commitment
Commitments And Contingencies [Line Items]
Other commitment	16,423			16,423		16,105
Joint Venture
Commitments And Contingencies [Line Items]
Other commitment	$ 293			$ 293
Other commitment, period	5 years			5 years
Total Contractual Trade-In Commitment | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other commitment	$ 1,455			$ 1,455		1,117
Net Amounts Payable to Customers Related to Probable Contractual Trade-In Commitments | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other commitment	302			302		286
Fair Value of Trade in Value of Aircraft | Commercial Aircraft Commitments
Commitments And Contingencies [Line Items]
Other commitment	302			302		$ 286
2023
Commitments And Contingencies [Line Items]
Changes in estimates				200
Future Years
Commitments And Contingencies [Line Items]
Changes in estimates				400
Contracted Customer Concessions & Other Considerations Liability
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	1,300			1,300
Contingent on Customer Negotiations
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	200			200
Lower Customer Delivery Payments
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	600			600
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