The Debt instrument basis spread on variable rate after abatement.

No definition available.

Name:	air_DebtInstrumentBasisSpreadOnVariableRateAfterAmendment
Namespace Prefix:	air_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase in current borrowing capacity under the credit facility considering certain circumstances.

+ References

No definition available.

+ Details

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Namespace Prefix:	air_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of facilities acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	air_NumberOfFacilitiesAcquired
Namespace Prefix:	air_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtLongtermAndShorttermCombinedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=air_SeniorUnsecuredPromissoryNotePayrollSupportProgramCaresActMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=air_CanadianDollarOfferRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Balance Type:
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- Details

Name:	srt_RangeAxis=srt_MaximumMember
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Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=air_MaintenanceRepairAndOperationsFacilitiesAcquiredInCanadaOwnedByPremierAviationMember
Namespace Prefix:
Data Type:	na
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Financing Arrangements (Details) $ in Millions, $ in Millions	Sep. 25, 2019 USD ($)	Oct. 18, 2017 CAD ($) facility	Aug. 31, 2020 USD ($)	May 31, 2020 USD ($)
Financing Arrangements
Total debt			$ 257.0	$ 602.0
Debt issuance costs, net			(1.9)	(2.0)
Long-term debt			255.1	600.0
Term Loan
Financing Arrangements
Total debt			23.8	22.5
Long-term debt		$ 31
Revolving Credit Facility expiring September 25, 2024 with interest payable monthly
Financing Arrangements
Current borrowing capacity	$ 600.0
Increase in borrowing capacity	300.0
Maximum borrowing capacity	$ 900.0
Payroll Support Program Promissory Note
Financing Arrangements
Total debt			8.7
CDOR \| Minimum \| Term Loan
Financing Arrangements
Basis spread on variable rate (as a percent)		1.25%
CDOR \| Maximum \| Term Loan
Financing Arrangements
Basis spread on variable rate (as a percent)		2.25%
Eurodollar rate \| Revolving Credit Facility expiring September 25, 2024 with interest payable monthly \| Minimum
Financing Arrangements
Debt instrument basis spread on variable rate after amendment	0.875%
Eurodollar rate \| Revolving Credit Facility expiring September 25, 2024 with interest payable monthly \| Maximum
Financing Arrangements
Debt instrument basis spread on variable rate after amendment	1.75%
Base rate \| Revolving Credit Facility expiring September 25, 2024 with interest payable monthly \| Minimum
Financing Arrangements
Debt instrument basis spread on variable rate after amendment	0.00%
Base rate \| Revolving Credit Facility expiring September 25, 2024 with interest payable monthly \| Maximum
Financing Arrangements
Debt instrument basis spread on variable rate after amendment	0.75%
Prime Rate \| Minimum \| Term Loan
Financing Arrangements
Basis spread on variable rate (as a percent)		0.25%
Prime Rate \| Maximum \| Term Loan
Financing Arrangements
Basis spread on variable rate (as a percent)		1.25%
Revolving credit facility
Financing Arrangements
Total debt			$ 224.5	$ 579.5
MRO facilities acquired in Canada owned by Premier Aviation
Financing Arrangements
Number of facilities acquired \| facility		2