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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Feb. 28, 2015
Store
DEA Settlement [Member]  
Loss Contingencies [Line Items]  
Reserve for litigation settlements $ 80.0us-gaap_LitigationSettlementAmount
/ us-gaap_LitigationCaseAxis
= wxz_DeaSettlementMember
Number of DEA pharmacy registrations surrendered 6wxz_NumberOfDeaPharmacyRegistrationsSurrendered
/ us-gaap_LitigationCaseAxis
= wxz_DeaSettlementMember
Derivative Settlement [Member]  
Loss Contingencies [Line Items]  
Reserve for litigation settlements $ 3.5us-gaap_LitigationSettlementAmount
/ us-gaap_LitigationCaseAxis
= wxz_DerivativesettlementMember