Supplemental Quarterly Financial Data (Unaudited) (Narrative) (Details) $ in Thousands	3 Months Ended
Dec. 31, 2015 USD ($)
Quarterly Financial Data
Other expenses, special charges	$ 16,100

One-time expenses recognized in the period related to the entity's efforts to consolidate facilities, reduce costs and address current market conditions.

No definition available.

Name:	wwd_OtherExpensesSpecialCharges
Namespace Prefix:	wwd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration