XML 90 R73.htm IDEA: XBRL DOCUMENT
v3.20.4

Purchase of Remaining Ownership Interest in Joint Venture - Additional Information (Detail) - Homans Associates II LLC [Member] $ in Thousands | May 31, 2019 USD ($) Location
--- | ---
Business Acquisition [Line Items] |
Additional ownership interest acquired in subsidiary | 20.00%
Percentage of ownership interest | 100.00%
Cash consideration paid to obtain additional ownership | $ | $ 32,400
Number of locations in which the company operates | Location | 17

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the purchase of noncontrolling interest during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Additional ownership interest acquired. + References No definition available. + Details
Name: | wso_AdditionalOwnershipInterestAcquiredInSubsidiary
Namespace Prefix: | wso_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition No Of Locations From where this enterprise carries out its operations. + References No definition available. + Details
Name: | wso_NumberOfLocationsInWhichTheEntityOperates
Namespace Prefix: | wso_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of ownership interest in subsidiary. + References No definition available. + Details
Name: | wso_PercentageOfOwnershipInterestInSubsidiary
Namespace Prefix: | wso_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wso_HomansAssociatesIiLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |