Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- 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

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Period Type:	duration

- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 14
-URI https://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 13
-URI https://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

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Balance Type:	credit
Period Type:	duration

- Definition

Seasonal discretionary maximum borrowing capacity under revolving credit agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	wso_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

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Debt - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	Mar. 16, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Debt Instrument [Line Items]
Payment of fees related to revolving credit agreement		$ 580	$ 0
Borrowings under revolving credit agreement		$ 197,600		$ 0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit agreement, maturity date		Mar. 16, 2028
Payment of fees related to revolving credit agreement		$ 580
Borrowings under revolving credit agreement		$ 197,600
Maximum capacity under revolving credit agreement	$ 600,000
Seasonal discretionary maximum borrowing capacity under revolving credit agreement	500,000
Unused commitment fee percentage		12.50%
Line of credit facility term		5 years
Revolving Credit Facility [Member] \| Swingline Subfacility [Member]
Debt Instrument [Line Items]
Maximum capacity under revolving credit agreement	125,000
Revolving Credit Facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum capacity under revolving credit agreement	10,000
Revolving Credit Facility [Member] \| Alternative Currency Sublimit [Member]
Debt Instrument [Line Items]
Maximum capacity under revolving credit agreement	75,000
Revolving Credit Facility [Member] \| Mexican Borrowing Sublimit [Member]
Debt Instrument [Line Items]
Maximum capacity under revolving credit agreement	10,000
Revolving Credit Facility [Member] \| Prior Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum capacity under revolving credit agreement	560,000
Repayment under prior revolving credit agreement	$ 235,500
Revolving Credit Facility [Member] \| Maximum [Member] \| Unused Commitment Fee [Member]
Debt Instrument [Line Items]
Unused commitment fee percentage		27.50%
Revolving Credit Facility [Member] \| Minimum [Member] \| Unused Commitment Fee [Member]
Debt Instrument [Line Items]
Unused commitment fee percentage		12.50%
Prime Rate \| Revolving Credit Facility [Member] \| Additional Variable Interest Rate Spread One [Member]
Debt Instrument [Line Items]
Basis spread		1.00%
Prime Rate \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread		50.00%
Prime Rate \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread		0.00%
Federal Funds Effective Rate [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread		0.50%
Federal Funds Effective Rate [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread		50.00%
Federal Funds Effective Rate [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread		0.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread		1.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Revolving Credit Facility [Member] \| Additional Variable Interest Rate Spread One [Member]
Debt Instrument [Line Items]
Basis spread		0.10%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread		137.50%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| Additional Variable Interest Rate Spread One [Member]
Debt Instrument [Line Items]
Basis spread		50.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread		100.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Revolving Credit Facility [Member] \| Minimum [Member] \| Additional Variable Interest Rate Spread One [Member]
Debt Instrument [Line Items]
Basis spread		0.00%
Daily Simple SOFR [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread		100.00%
Daily Simple SOFR [Member] \| Revolving Credit Facility [Member] \| Additional Variable Interest Rate Spread One [Member]
Debt Instrument [Line Items]
Basis spread		0.10%
Daily Simple SOFR [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread		137.50%
Daily Simple SOFR [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread		100.00%