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Unaudited Pro Forma Financial Information from Joint Venture (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012
Business Acquisition, Pro Forma Information [Line Items] |
Revenues | $ 3,526,621 us-gaap_BusinessAcquisitionsProFormaRevenue
Net income | 156,728 wso_BusinessAcquisitionsProFormaProfitLoss
Less: net income attributable to noncontrolling interest | 54,153 wso_ProFormaNetIncomeLossAttributableToNoncontrollingInterest
Net income attributable to Watsco, Inc. | $ 102,575 us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Diluted earnings per share for Common and Class B common stock | $ 2.64 us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted

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- Definition The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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