XML 26 R79.htm IDEA: XBRL DOCUMENT v2.4.1.9

Subsequent Event - Additional Information (Detail) (USD $)	12 Months Ended			3 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 06, 2015
Subsequent Event [Line Items]
Cash dividend	$ 2.00us-gaap_CommonStockDividendsPerShareDeclared	$ 1.15us-gaap_CommonStockDividendsPerShareDeclared	$ 7.48us-gaap_CommonStockDividendsPerShareDeclared
Common and Class B Common Stock
Subsequent Event [Line Items]
Cash dividend				$ 0.60us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = wso_CommonAndClassBCommonStockMember
Subsequent Event | Common and Class B Common Stock
Subsequent Event [Line Items]
Cash dividend					$ 0.70us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = wso_CommonAndClassBCommonStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
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Balance Type:
Period Type: