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Variable Interest Entities (Details) (USD $)
Jul. 31, 2014
Employee Housing Entities [Member]
 
Carrying amount of consolidated VIE assets $ 27,600,000
Carrying amount of consolidated VIE liabilities 63,500,000
Amount outstanding in letters of credit 53,400,000
Avon Partners II LLC [Member]
 
Carrying amount of consolidated VIE assets 4,300,000
Carrying amount of consolidated VIE liabilities $ 0