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The amount of expense related to early termination of a commercial power-by-the-hour ("PBH") customer contract.

No definition available.

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The amount of forward loss reserve for commercial power-by-the-hour.

No definition available.

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Data Type:	xbrli:monetaryItemType
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The amount of loss reserve for commercial power-by-the-hour.

No definition available.

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Amount of expense related to termination of a commercial power-by-the-hour ("PBH") customer contract.

No definition available.

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The amount of contract with customer asset after reducing liabilities.

No definition available.

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Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time classified as current.

No definition available.

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Amount of increase (decrease) in contract with customer assets (liabilities) net.

No definition available.

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No definition available.

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Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable classified as current.

No definition available.

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Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable classified as noncurrent.

No definition available.

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Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration from customer has been received or is due, other.

No definition available.

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Total contract with customer liability revenue recognized during the period, including revenue recognized from current period increase in the contract liability.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

No definition available.

Name:	us-gaap_ChangeInContractWithCustomerLiabilityAbstract
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Balance Type:	na
Period Type:	duration

No definition available.

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Amount of expense (reversal of expense) for expected credit loss on right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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No definition available.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

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Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable.

Name:	us-gaap_IncreaseDecreaseInContractWithCustomerLiability
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No definition available.

Name:	us-gaap_RevenuePerformanceObligationAbstract
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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Name:	us-gaap_RevenueRemainingPerformanceObligation
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
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Data Type:	xbrli:durationItemType
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Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.

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Name:	us-gaap_RevenueRemainingPerformanceObligationPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Name:	us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis=2021-09-01
Namespace Prefix:
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Period Type:

Name:	us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis=2022-09-01
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_MajorCustomersAxis=air_CommercialPbhCustomerContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BalanceSheetLocationAxis=air_AccruedLiabilitiesCurrentMember
Namespace Prefix:
Data Type:	na
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