The amount of purchase discount and other fees relating to sales receivables.

No definition available.

Name:	air_PurchaseDiscountAndOtherFees
Namespace Prefix:	air_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount remitted to the purchaser in relation to receivables held-for-sale.

+ References

No definition available.

+ Details

Name:	air_ReceivablesHeldForSaleRemittedAmount
Namespace Prefix:	air_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount retained interests in the sold receivables, other than limited recourse obligations in certain circumstances.

+ References

No definition available.

+ Details

Name:	air_RetainedInterestInSoldReceivables
Namespace Prefix:	air_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Its is represents the Sale of Receivables.

+ References

No definition available.

+ Details

Name:	air_SaleOfReceivablesLineItems
Namespace Prefix:	air_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before valuation allowance, of accounts and financing receivables held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481852/948-310-45-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482913/230-10-50-8

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_TypeOfArrangementAxis=air_PurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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Period Type:

Sale of Receivables (Details) - USD ($) $ in Millions	12 Months Ended
Sale of Receivables (Details) - USD ($) $ in Millions	May 31, 2024	May 31, 2023	May 31, 2022	Feb. 23, 2018
Sale of Receivables
Amount collected	$ 10.3	$ 13.4
Purchase Agreement
Sale of Receivables
Maximum amount of receivables sold	144.4	171.6	$ 283.3
Retained interests	0.0
Remitted receivables	143.5	173.8	306.9
Amount collected	0.9	1.3
Discounts on sale of our receivables	$ 0.7	$ 0.6	$ 0.3
Maximum \| Purchase Agreement
Sale of Receivables
Maximum amount of receivables sold				$ 150.0