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Subsequent Events - Additional Information (Detail) $ in Thousands | May 03, 2024 USD ($)
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Subsequent Event [Member] | Sales Agreement For ATM Program [Member] |
Subsequent Event [Line Items] |
Maximum Aggregate Offering Amount Of Stock | $ 400,000

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483399/855-10-50-2 + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum aggregate offering amount of stock. + References No definition available. + Details
Name: | wso_MaximumAggregateOfferingAmountOfStock
Namespace Prefix: | wso_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | wso_ProgramNameAxis=wso_SalesAgreementForAtmProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |