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Supplemental Statements of Cash Flows Information (Schedule of Cash Flow Supplemental Disclosures) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Supplemental Statements of Cash Flows Information    
Interest paid, net of amounts capitalized $ 13,953us-gaap_InterestPaid $ 12,299us-gaap_InterestPaid
Income taxes paid 7,337us-gaap_IncomeTaxesPaid 4,601us-gaap_IncomeTaxesPaid
Income tax refunds received 71us-gaap_ProceedsFromIncomeTaxRefunds 0us-gaap_ProceedsFromIncomeTaxRefunds
Purchases of property, plant and equipment on account 33,621us-gaap_CapitalExpendituresIncurredButNotYetPaid 3,414us-gaap_CapitalExpendituresIncurredButNotYetPaid
Notes receivable from municipalities for economic development incentives $ 0wwd_NonCashNoteReceivableWithMunicipalityReceivedInConnectionWithEconomicDevelopmentIncentives $ 6,486wwd_NonCashNoteReceivableWithMunicipalityReceivedInConnectionWithEconomicDevelopmentIncentives