Leases (Property, Plant and Equipment Leased to Others through Embedded Leasing Arrangements) (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024
Leases [Abstract]
Property, plant, and equipment	$ 40,866	$ 48,495
Less accumulated depreciation	(28,136)	(32,994)
Property, plant, and equipment, net	$ 12,730	$ 15,501

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