Debt instrument, maturity month and year.

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- Definition

Debt instrument, maturity year.

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- Definition

Debt divided by adjusted EBITDA

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Debt divided by adjusted EBITDA required by the financial covenant.

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Letter of credit maximum sublimit amount.

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Letter of credit outstanding sublimit unused amount.

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Line of credit facility, expiration month and year.

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- Definition

Long term debt including current maturities fair value.

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- Definition

Net book valve of collateralized Boeing aircraft.

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Number of Boeing aircraft.

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- Definition

Carrying value as of the balance sheet date of long-term unsecured obligations issued by corporations and other borrowers to investors (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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Long-term Debt and Other Financing Arrangements - Additional Information (Details)		3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 15, 2022 USD ($)	May 31, 2021 USD ($)	May 31, 2021 EUR (€)	Feb. 28, 2022 USD ($)	May 31, 2022 USD ($) AirCraft	May 31, 2021 USD ($)	May 31, 2021 EUR (€)
Line Of Credit Facility [Line Items]
Long-term debt weighted-average interest rate					3.50%
Long term debt, including current maturities and exclusive of finance leases fair value		$ 23,100,000,000			$ 18,800,000,000	$ 23,100,000,000
Debt instrument, face amount					$ 20,031,000,000
Number of Boeing aircraft \| AirCraft					19
Net book value of Boeing aircraft					$ 1,800,000,000
Financial Covenant Terms Ratio					350.00%
Financial covenant compliance ratio					182.00%
Loss on debt extinguishment		393,000,000				393,000,000
Senior Unsecured Debt [Member]
Line Of Credit Facility [Line Items]
Debt instrument, face amount		$ 3,250,000,000				$ 3,250,000,000
Five-Year Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Line Of Credit Facility Maximum Borrowing Capacity	$ 2,000,000,000.0
Line of Credit Facility, Term	5 years
Line of credit facility, expiration date	2026-03
Letter of credit maximum sublimit amount	$ 250,000,000
Letter of credit outstanding sublimit unused amount					$ 250,000,000
Credit Agreements [Member]
Line Of Credit Facility [Line Items]
Commercial paper outstanding					0
364-Day Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Line Of Credit Facility Maximum Borrowing Capacity				$ 1,500,000,000
Line of Credit Facility, Term				364 days
Three Year Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Line Of Credit Facility Maximum Borrowing Capacity	$ 1,500,000,000
Line of Credit Facility, Term	3 years
Line of credit facility, expiration date	2025-03
1.875% due in February 2034 [Member]
Line Of Credit Facility [Line Items]
Debt instrument, face amount					$ 970,000,000
Fixed interest rate					1.875%
Debt instrument, maturity date					2034-02
0.45% Fixed-rate Notes Due in May 2029 [Member] \| Senior Unsecured Debt [Member]
Line Of Credit Facility [Line Items]
Debt instrument, face amount \| €							€ 600,000,000
Fixed interest rate		0.45%				0.45%	0.45%
Debt instrument, maturity date		2029-05	2029-05
0.95% Fixed-rate Notes Due in May 2033 [Member] \| Senior Unsecured Debt [Member]
Line Of Credit Facility [Line Items]
Debt instrument, face amount \| €							€ 650,000,000
Fixed interest rate		0.95%				0.95%	0.95%
Debt instrument, maturity date		2033-05	2033-05
2.40% Fixed-rate Notes Due in May 2031 [Member] \| Senior Unsecured Debt [Member]
Line Of Credit Facility [Line Items]
Debt instrument, face amount		$ 1,000,000,000.0				$ 1,000,000,000.0
Fixed interest rate		2.40%				2.40%	2.40%
Debt instrument, maturity date		2031-05	2031-05
3.25% Fixed-rate Notes Due in May 2041 [Member] \| Senior Unsecured Debt [Member]
Line Of Credit Facility [Line Items]
Debt instrument, face amount		$ 750,000,000				$ 750,000,000
Fixed interest rate		3.25%				3.25%	3.25%
Debt instrument, maturity date		2041-05	2041-05
3.40% Notes Due 2022 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		3.40%				3.40%	3.40%
Repayments of notes		$ 500,000,000
Debt instrument maturity, year		2022	2022
0.70% Notes Due 2022 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		0.70%				0.70%	0.70%
Repayments of notes \| €			€ 640,000,000
Debt instrument maturity, year		2022	2022
2.625% Notes Due 2023 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		2.625%				2.625%	2.625%
Repayments of notes		$ 500,000,000
Debt instrument maturity, year		2023	2023
1.00% Notes Due 2023 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		1.00%				1.00%	1.00%
Repayments of notes \| €			€ 750,000,000
Debt instrument maturity, year		2023	2023
2.70% Notes Due 2023 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		2.70%				2.70%	2.70%
Repayments of notes		$ 250,000,000
Debt instrument maturity, year		2023	2023
4.00% Notes Due 2024 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		4.00%				4.00%	4.00%
Repayments of notes		$ 750,000,000
Debt instrument maturity, year		2024	2024
3.20% Notes Due 2025 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		3.20%				3.20%	3.20%
Repayments of notes		$ 700,000,000
Debt instrument maturity, year		2025	2025
3.80% Notes Due 2025 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		3.80%				3.80%	3.80%
Repayments of notes		$ 1,000,000,000.0
Debt instrument maturity, year		2025	2025
3.30% Notes Due 2027 [Member]
Line Of Credit Facility [Line Items]
Fixed interest rate		3.30%				3.30%	3.30%
Repayments of notes		$ 450,000,000
Debt instrument maturity, year		2027	2027