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Contingencies and Environmental Remediation (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 9 Months Ended
Sep. 29, 2013
Aug. 22, 2013
Trabakoolas et al., v, Watts Water Technologies, Inc., et al.
Sep. 29, 2013
Asbestos Litigation
item
Litigation contingencies      
Reasonably possible loss in excess of the amount accrued for its legal contingencies $ 6.5    
Period of stay for class action   45 days  
Number of lawsuits the entity is defending in different jurisdictions     42