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Segment and Geographic Information (Details 2) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Net sales are presented in geographic areas        
Net Sales $ 691,702us-gaap_SalesRevenueNet $ 581,949us-gaap_SalesRevenueNet $ 1,394,027us-gaap_SalesRevenueNet $ 1,187,254us-gaap_SalesRevenueNet
United States        
Net sales are presented in geographic areas        
Net Sales 549,805us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US		 479,488us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US		 1,111,364us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US		 980,539us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US
Canada        
Net sales are presented in geographic areas        
Net Sales 103,523us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_CA		 67,770us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_CA		 202,704us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_CA		 137,517us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_CA
Other countries        
Net sales are presented in geographic areas        
Net Sales $ 38,374us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= ait_OtherCountriesMember		 $ 34,691us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= ait_OtherCountriesMember		 $ 79,959us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= ait_OtherCountriesMember		 $ 69,198us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= ait_OtherCountriesMember