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Inventories (Schedule of Inventories) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Sep. 30, 2014
Inventories    
Raw Materials $ 72,415us-gaap_InventoryRawMaterialsNetOfReserves $ 60,442us-gaap_InventoryRawMaterialsNetOfReserves
Work in progress 98,071us-gaap_InventoryWorkInProcessNetOfReserves 93,836us-gaap_InventoryWorkInProcessNetOfReserves
Component Parts 255,207wwd_InventoryComponentPartsNetOfReserves 247,299wwd_InventoryComponentPartsNetOfReserves
Finished Goods 50,264us-gaap_InventoryFinishedGoodsNetOfReserves 50,367us-gaap_InventoryFinishedGoodsNetOfReserves
Inventory, net $ 475,957us-gaap_InventoryNet $ 451,944us-gaap_InventoryNet