Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

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Amount of loss contingency liability.

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-Publisher FASB

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-SubTopic 20

-Section 50

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Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

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Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer.

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Amount of increase (decrease) in loss contingency liability.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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-Name Accounting Standards Codification

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- Definition

Number of defendants named in a legal action.

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No definition available.

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The estimated maximum amount of possible loss from the contingency.

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Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 3

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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.

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- Definition

Represents the number of separate putative class action complaints.

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Period for Payment of Remaining Liability

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Contingencies and Environmental Remediation (Details) (USD $) In Millions, unless otherwise specified	2 Months Ended	0 Months Ended	12 Months Ended
	Dec. 31, 2014 item	Dec. 12, 2013	Dec. 31, 2014	Sep. 28, 2014	Dec. 31, 2013
Litigation contingencies
Reasonably possible loss in excess of the amount accrued for its legal contingencies	5.8		$ 5.8
Connector Class Action
Litigation contingencies
Number of class action complaints	3
Trabakoolas et al., v, Watts Water Technologies, Inc., et al.
Litigation contingencies
Total settlement amount		23.0
Possible loss		14.0
Insurance proceeds		9.0
Liability recorded	(8.8)		(8.8)		22.6
Liability recorded, current					12.7
Liability recorded, noncurrent					9.9
Insurance proceeds, current assets				9.0	9.0
Reduction in liability			$ 13.8
Period for payment of remaining liability			4 years
Asbestos Litigation
Litigation contingencies
Number of lawsuits the entity is defending in different jurisdictions			240