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Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] $ in Thousands	May 01, 2025 USD ($) Location shares	Apr. 01, 2025 USD ($) Location
Hawkins HVAC Distributors [Member]
Subsequent Event [Line Items]
Number of locations in which the company operates | Location		2
Cash consideration for business acquisition		$ 2,530
Annual sales		$ 9,000
Southern Ice Equipment Distributors, Inc. [Member]
Subsequent Event [Line Items]
Number of locations in which the company operates | Location	7
Stock issued for acquisition | shares	7,400
Fair value of stock issued for acquisition	$ 3,413
Cash consideration for business acquisition	14,250
Annual sales	$ 30,000

X

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

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-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

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X

- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 30
-Paragraph 8
-SubTopic 30
-Topic 805
-Publisher FASB
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-Paragraph 7
-SubTopic 30
-Topic 805
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479637/805-30-30-7

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X

- 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/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

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X

- 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

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- Definition

Business acquisition annual sales.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

No Of Locations From where this enterprise carries out its operations.

+ References

No definition available.

+ Details

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Namespace Prefix:	wso_
Data Type:	xbrli:integerItemType
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Period Type:	instant

X

- Details

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Period Type:

X

- Details

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X

- Details

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