XML 49 R20.htm IDEA: XBRL DOCUMENT v2.4.0.8

Summary of Significant Accounting Policies - Additional Information (Detail)	Mar. 31, 2014 Entity
Significant Accounting Policies [Line Items]
Number of joint ventures	3

X

- Definition

Number of joint ventures. Joint ventures are entities operated by the controlling interest for the mutual benefit of the members.

+ References

No definition available.

+ Details

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

X

- Details

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