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v2.4.1.9

Accounting Policies (Details 3) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Income Taxes |
Reduction in unrecognized tax benefits resulting from voluntary disclosure agreements | $ 0.2 wts_UnrecognizedTaxBenefitsDecreasesResultingFromVoluntaryDisclosureAgreements
Gross unrecognized tax benefits | 1.8 us-gaap_UnrecognizedTaxBenefits
Amount of unrecognized tax benefits which, if recognized, would affect the effective tax rate | 1.3 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Reconciliation of the beginning and ending amount of unrecognized tax benefits |
Balance at the beginning of the period | 0.8 us-gaap_UnrecognizedTaxBenefits
Increases related to prior year tax positions | 1.3 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Settlements | (0.2)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Currency movement | (0.1)us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation
Balance at the end of the period | 1.8 us-gaap_UnrecognizedTaxBenefits
Increase in unrecognized tax benefits | 1.0 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Reduction in unrecognized tax benefits related to reduced exposures in Europe | $ 1.3 wts_UnrecognizedTaxBenefitsDecreasesResultingFromReducedExposureInEurope
Percentage of likelihood of realization that the tax position must exceed in order for the amount to be recognized | 50.00 wts_TaxBenefitsRecognizationBasisForUncertainTaxPositionLikelihoodRealizationGreaterThanPercentage
Buildings and improvements | Minimum |
Property, plant and equipment |
Estimated useful lives of the assets | 10 years
Buildings and improvements | Maximum |
Property, plant and equipment |
Estimated useful lives of the assets | 40 years
Machinery and equipment | Minimum |
Property, plant and equipment |
Estimated useful lives of the assets | 3 years
Machinery and equipment | Maximum |
Property, plant and equipment |
Estimated useful lives of the assets | 15 years

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition The percentage of likelihood of realization that the tax position must exceed in order for the amount to be recognized in the financial statements. + References No definition available. + Details
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