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New Accounting Pronouncements (Details) - New Accounting Pronouncement, Early Adoption - ASU 2015-17
$ in Millions
Oct. 31, 2015
USD ($)
New Accounting Pronouncement, Early Adoption [Line Items]  
Current deferred tax asset reclassified to non-current assets $ 26.9
Non-current deferred tax asset reclassified from current assets $ 26.9