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Derivative Instruments and Hedging Activities (Unrecognized Gains and Losses and Recognized Gains Associated with Derivative Instruments in Balance Sheet) (Details) (Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified | Mar. 31, 2012 | Sep. 30, 2011
--- | --- | ---
Unrecognized gain (loss) | $ (693) | $ (778)
Accumulated Other Comprehensive Earnings [Member] |  |
Unrecognized gain (loss) | (693) | (781)
Current and Long-Term Debt [Member] |  |
Unrecognized gain (loss) | $ 0 | $ 3

X
- Definition The remaining amount of the realized gain or loss upon termination or settlement of derivative instruments which are held on the balance sheet and are being amortized into expense over the life of the associated hedged item. + References No definition available. + Details
Name: | wwd_RealizedGainLossOnTerminatedDerivatives
Namespace Prefix: | wwd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant