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v2.4.1.9

Restructuring and Other Charges, Net (Details 2) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended | 3 Months Ended
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014
Restructuring reserve |  |  |  |  |
Restructuring expense | $ 8.0 us-gaap_RestructuringSettlementAndImpairmentProvisions | $ 15.2 us-gaap_RestructuringSettlementAndImpairmentProvisions | $ 8.7 us-gaap_RestructuringSettlementAndImpairmentProvisions | $ 4.2 us-gaap_RestructuringSettlementAndImpairmentProvisions |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Costs incurred | (8.0)us-gaap_RestructuringSettlementAndImpairmentProvisions | (15.2)us-gaap_RestructuringSettlementAndImpairmentProvisions | (8.7)us-gaap_RestructuringSettlementAndImpairmentProvisions | (4.2)us-gaap_RestructuringSettlementAndImpairmentProvisions |
EMEA | 2014 Actions |  |  |  |  |
Restructuring reserve |  |  |  |  |
Restructuring expense |  |  |  |  | 6.9 us-gaap_RestructuringSettlementAndImpairmentProvisions / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs | 9.9 us-gaap_RestructuringAndRelatedCostExpectedCost1 / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember | 9.9 us-gaap_RestructuringAndRelatedCostExpectedCost1 / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  | 9.9 us-gaap_RestructuringAndRelatedCostExpectedCost1 / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Costs incurred |  |  |  |  | (6.9)us-gaap_RestructuringSettlementAndImpairmentProvisions / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Remaining costs |  |  |  |  | 3.0 wts_RestructuringAndRelatedCostRemainingExpectedCost / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
EMEA | 2013 Actions |  |  |  |  |
Restructuring reserve |  |  |  |  |
Restructuring expense |  |  | 4.1 us-gaap_RestructuringSettlementAndImpairmentProvisions / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs |  |  | 8.1 us-gaap_RestructuringAndRelatedCostExpectedCost1 / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Costs incurred |  |  | (4.1)us-gaap_RestructuringSettlementAndImpairmentProvisions / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Remaining costs |  | 0.2 wts_RestructuringAndRelatedCostRemainingExpectedCost / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  |
Severance | Europe | 2013 Actions |  |  |  |  |
Restructuring reserve |  |  |  |  |
Balance at the beginning of the period |  | 2.0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |  |  |
Restructuring expense |  | 3.8 us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 4.1 us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |  |
Utilization and foreign currency impact |  | (4.3)us-gaap_RestructuringReserveTranslationAndOtherAdjustment / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | (2.1)us-gaap_RestructuringReserveTranslationAndOtherAdjustment / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |  |
Balance at the ending of the period | 1.5 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 1.5 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 2.0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |  | 1.5 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Costs incurred |  | (3.8)us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | (4.1)us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |  |
Severance | EMEA | 2014 Actions |  |  |  |  |
Restructuring reserve |  |  |  |  |
Restructuring expense |  |  |  |  | 6.9 us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs | 8.8 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember | 8.8 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  | 8.8 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Costs incurred |  |  |  |  | (6.9)us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Remaining costs |  |  |  |  | 1.9 wts_RestructuringAndRelatedCostRemainingExpectedCost / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Severance | EMEA | 2013 Actions |  |  |  |  |
Restructuring reserve |  |  |  |  |
Restructuring expense |  | 3.2 us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember | 4.1 us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs |  |  | 7.5 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Costs incurred |  | (3.2)us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember | (4.1)us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Remaining costs |  | 0.2 wts_RestructuringAndRelatedCostRemainingExpectedCost / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  |
Legal and consultancy | EMEA | 2014 Actions |  |  |  |  |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs | 0.1 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_LegalAndConsultancyMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember | 0.1 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_LegalAndConsultancyMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  | 0.1 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_LegalAndConsultancyMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Remaining costs |  |  |  |  | 0.1 wts_RestructuringAndRelatedCostRemainingExpectedCost / us-gaap_RestructuringCostAndReserveAxis = wts_LegalAndConsultancyMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Legal and consultancy | EMEA | 2013 Actions |  |  |  |  |
Restructuring reserve |  |  |  |  |
Restructuring expense |  | 0.2 us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = wts_LegalAndConsultancyMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs |  |  | 0.2 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_LegalAndConsultancyMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Costs incurred |  | (0.2)us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = wts_LegalAndConsultancyMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  |
Asset write-downs | EMEA | 2014 Actions |  |  |  |  |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs | 0.9 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_PlantWriteDownMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember | 0.9 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_PlantWriteDownMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  | 0.9 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_PlantWriteDownMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Remaining costs |  |  |  |  | 0.9 wts_RestructuringAndRelatedCostRemainingExpectedCost / us-gaap_RestructuringCostAndReserveAxis = wts_PlantWriteDownMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Asset write-downs | EMEA | 2013 Actions |  |  |  |  |
Restructuring reserve |  |  |  |  |
Restructuring expense |  | 0.2 us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = wts_PlantWriteDownMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs |  |  | 0.2 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_PlantWriteDownMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Costs incurred |  | (0.2)us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = wts_PlantWriteDownMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  |
Facility exit and other | EMEA | 2014 Actions |  |  |  |  |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs | 0.1 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_FacilityClosingAndOtherMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember | 0.1 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_FacilityClosingAndOtherMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  | 0.1 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_FacilityClosingAndOtherMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Remaining costs |  |  |  |  | 0.1 wts_RestructuringAndRelatedCostRemainingExpectedCost / us-gaap_RestructuringCostAndReserveAxis = wts_FacilityClosingAndOtherMember / wts_RestructuringPlanByNameAxis = wts_Actions2014Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember
Facility exit and other | EMEA | 2013 Actions |  |  |  |  |
Restructuring reserve |  |  |  |  |
Restructuring expense |  | 0.2 us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = wts_FacilityClosingAndOtherMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  |
Summary of total expected, incurred and remaining pre-tax costs |  |  |  |  |
Expected costs |  |  | 0.2 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = wts_FacilityClosingAndOtherMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |
Costs incurred |  | $ (0.2)us-gaap_RestructuringSettlementAndImpairmentProvisions / us-gaap_RestructuringCostAndReserveAxis = wts_FacilityClosingAndOtherMember / wts_RestructuringPlanByNameAxis = wts_Actions2013Member / us-gaap_StatementGeographicalAxis = wts_EuropeMiddleEastAndAfricaMember |  |  |

X
- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition The amount of change in the restructuring reserve related to foreign currency translation adjustments and any other adjustments not separately disclosed or provided for elsewhere in the Taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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- Definition The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition This element represents the remaining amount of expected restructuring costs as of the balance sheet date. + References No definition available. + Details
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