Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
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Period Type:	duration

- Definition

The premium (cost) of a hedge, expensed during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Identification of the specific currency to be purchased upon settlement or exercise of the foreign currency derivative.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual rate at which a foreign currency can be purchased or sold.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Date the entity entered into the derivative contract, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the derivative contract matures, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Definition

Date the event occurred after the balance sheet date but before financial statements are issues or available to be issued, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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Period Type:	duration

- Definition

Amount of direct costs of not yet consummated business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

No definition available.

+ Details

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

- Definition

Name of the entity to be potentially acquired.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Definition

Amount of consideration estimated will be transferred in an unconsummated business combination, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

No definition available.

+ Details

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

- Definition

Date the Company must make the decision whether to exercise derivative instrument, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	wwd_DerivativeExerciseDates
Namespace Prefix:	wwd_
Data Type:	xbrli:dateItemType
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- Details

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Namespace Prefix:
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Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeOptionMember
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Subsequent Events (Narrative) (Details) € in Thousands, $ in Thousands					6 Months Ended
	Jun. 01, 2018	May 30, 2018	Apr. 18, 2018 USD ($)	Apr. 09, 2018 EUR (€)	Mar. 31, 2018 USD ($)	Apr. 18, 2018 EUR (€)
Subsequent Event [Line Items]
Subsequent Event, Date			Apr. 16, 2018	Apr. 09, 2018
Date of Acquisition Agreement				Apr. 09, 2018
Acquisition total consideration \| €				€ 700,000
Transaction costs \| $					$ 1,136
Name of entity to be acquired				L'Orange GmbH
Not Designated as Hedging Instrument, Economic Hedge [Member] \| Foreign Exchange Option [Member]
Subsequent Event [Line Items]
Derivative, Inception Date			Apr. 18, 2018
Derivative, Maturity Date	Jun. 01, 2018
Derivative, Exercise Date		May 30, 2018
Derivative, Cost of Hedge \| $			$ 5,543
Derivative, Currency Bought			Euros
Derivative, Notional Amount \| €						€ 490,000
Derivative, Forward Exchange Rate						1.2432