XML 39 R27.htm IDEA: XBRL DOCUMENT v3.5.0.2

Earnings Per Share - Additional Information (Detail) - shares	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Line Items]
Convertible Class B common stock outstanding	2,719,495	2,724,464

X

- Definition

Class B common stock securities that may be converted to Common stock securities at any time on a one-for-one basis at the option of the shareholder.

+ References

No definition available.

+ Details

Name:	wso_ConvertibleClassBCommonStockOutstanding
Namespace Prefix:	wso_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Earnings per share disclosures.

+ References

No definition available.

+ Details

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