XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Contingencies and Environmental Remediation (Details) $ in Millions |  | 9 Months Ended |
--- | --- | --- | ---
Feb. 16, 2016 USD ($) | Oct. 02, 2016 USD ($) item segment | Dec. 31, 2015 USD ($)
Litigation contingencies |  |  |
Reasonably possible loss in excess of the amount accrued for its legal contingencies |  | $ 4.1 |
Number of judgments entered against the Company | item |  | 0 |
Connector Class Action |  |  |
Litigation contingencies |  |  |
Total settlement amount on proposed litigation | $ (14.0) |  |
Possible loss on proposed estimate | 4.1 |  |
Estimated insurance receivable | $ 9.9 |  |
Liability recorded |  |  | $ 14.0
Liability recorded, current |  |  | 7.8
Liability recorded, noncurrent |  |  | 6.2
Insurance proceeds, current assets |  |  | $ 9.5
Asbestos Litigation |  |  |
Litigation contingencies |  |  |
Number of lawsuits the entity is defending in different jurisdictions | segment |  | 325 |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualCarryingValueCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualCarryingValueNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of defendants named in a legal action. + References No definition available. + Details
Name: | us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated maximum amount of possible loss from the contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyRangeOfPossibleLossMaximum
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of receivable related to a loss contingency accrual that is expected to be collected within one year or the normal operating cycle, if longer. For example, an insurance recovery receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12053-110248 + Details
Name: | us-gaap_LossContingencyReceivableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The total number of litigation judgments entered against the entity as of the end of the reporting period. + References No definition available. + Details
Name: | wts_AggregateNumberOfLitigationJudgments
Namespace Prefix: | wts_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of estimated insurance receivable related to a loss contingency accrual. For example, an estimated insurance recovery receivable. + References No definition available. + Details
Name: | wts_LossContingencyEstimatedInsuranceReceivable
Namespace Prefix: | wts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the proposed estimated amount of loss from the specified contingency. + References No definition available. + Details
Name: | wts_LossContingencyProposedEstimateOfPossibleLoss
Namespace Prefix: | wts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of total proposed judgement or settlement awarded to (against) the entity in respect of litigation. + References No definition available. + Details
Name: | wts_ProposedLitigationTotalSettlementAmount
Namespace Prefix: | wts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_LitigationCaseAxis=wts_WaterHeatersClassActionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=wts_AsbestosLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |