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Shareholders' Equity Textuals (Details) - shares shares in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Shareholders' Equity (Textuals) [Abstract]
Common stock held as treasury shares restricted as (in shares)	128
Antidilutive Stock options and appreciation rights relating to the acquisition of shares of common stock not included in the computation of diluted earnings per share (in shares)	226	66	141

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- Definition

Shareholders' Equity.

+ References

No definition available.

+ Details

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- Definition

Treasury shares restricted as collateral under escrow.

+ References

No definition available.

+ Details

Name:	ait_TreasurySharesRestrictedAsCollateralUnderEscrow
Namespace Prefix:	ait_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

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Period Type:	duration