XML 27 R22.htm IDEA: XBRL DOCUMENT v2.4.0.6

Basis of Presentation - Additional Information (Detail)	Mar. 31, 2013 Entity
Basis of Presentation [Line Items]
Number of joint ventures	3

X

- Details

Name:	wso_BasisOfPresentationLineItems
Namespace Prefix:	wso_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of joint ventures.

+ References

No definition available.

+ Details

Name:	wso_NumberOfJointVentures
Namespace Prefix:	wso_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant