This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460

+ Details

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

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The purchase price of the acquired entity as stated in the purchase agreement. This price has not been adjusted for subsequent customary purchase price adjustments, for example working capital adjustments.

+ References

No definition available.

+ Details

Name:	wwd_BusinessAcquistionCostOfAcquiredEntityConractPrice
Namespace Prefix:	wwd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The current portion of the amount of contractual payments receivable from the seller of the acquired entity related to the commitment of the acquired entity to continue to provide services to the seller of the acquired entity. The amount is the balance expected to be received from the seller of the acquired entity in the next twelve months.

+ References

No definition available.

+ Details

Name:	wwd_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPerformanceObligationContractualPaymentsReceivableCurrentPortion
Namespace Prefix:	wwd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of contractual payments receivable from the seller of the acquired entity related to the commitment of the acquired entity to continue to provide services to the seller of the acquired entity.

+ References

No definition available.

+ Details

Name:	wwd_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPerformanceObligationContractualPaymentsReceivableNonCurrentPortion
Namespace Prefix:	wwd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The current portion of a commitment for the acquired entity to continue to provide services to the seller of the acquired entity, for which the company will be paid by the seller of the acquired entity. This portion of the performance obligation that will be performed in the next twelve months.

+ References

No definition available.

+ Details

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

- Definition

The non-current portion of a commitment for the acquired entity to continue to provide services to the seller of the acquired entity, for which the company will be paid by the seller of the acquired entity.

+ References

No definition available.

+ Details

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

- Definition

The current portion of unfavorable contracts assumed from the acquired entity. This amount is expected to be recognized in the next twelve months.

+ References

No definition available.

+ Details

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

- Definition

The non-current portion of unfavorable contracts assumed from the acquired entity. This amount is not expected to be recognized in the next twelve months.

+ References

No definition available.

+ Details

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

Business Acquisitions (Narrative) (Details) (Business Acquisition, Acquiree - Duarte Business [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013	Dec. 28, 2012
Business Acquisition, Acquiree - Duarte Business [Member]
Purchase agreement contract price		$ 200,000
Cash paid at closing		198,900
Current portion of contractual commitment acquired that is expected to result in future losses				4,758
Long-term portion of contractual commitment acquired that is expected to result in future losses				15,383
Long-term portion of performance obligation acquired				13,215
Current portion of performance obligation acquired				12,985
Long-term receivable from Seller for services to be provided to the Seller				18,097
Current receivable from Seller for services to be provided to the Seller				8,103
Transaction costs	304		2,011
Net Sales	$ 34,723		$ 69,813