Leases (Property, Plant and Equipment Leased to Others through Embedded Leasing Arrangements) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2020
Leases [Abstract]
Property, plant and equipment leased to others through embedded leasing arrangements	$ 78,176	$ 76,655
Less accumulated depreciation	(31,714)	(29,819)
Property, plant and equipment leased to others through embedded leasing arrangements, net	$ 46,462	$ 46,836

Accumulated depreciation on property plant and equipment leased to others through embedded leasing arrangements.

No definition available.

Name:	wwd_AccumulatedDepreciationOnPropertyPlantAndEquipmentLeasedToOthersThroughEmbeddedLeasingArrangements
Namespace Prefix:	wwd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant