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Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

No definition available.

Name:	us-gaap_InterestRateDerivativeAssetsAtFairValue
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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

No definition available.

Name:	us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
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Assets that fund deferred compensation consisting of domestic equity funds.

No definition available.

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Assets that fund deferred compensation consisting of fixed income funds.

No definition available.

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Assets that fund deferred compensation consisting of international equity funds.

No definition available.

Name:	wgo_InternationalEquityFunds
Namespace Prefix:	wgo_
Data Type:	xbrli:monetaryItemType
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