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Acquisitions - Additional Information (Details) (USD $) In Millions, unless otherwise specified | 9 Months Ended |  | 3 Months Ended
--- | --- | --- | ---
Sep. 27, 2014 | Dec. 31, 2013 | Mar. 29, 2014 Pentair Residential Filtration [Member]
Business Acquisition [Line Items] |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  | 19.90% |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests | $ 134.7 |  | $ 134.3
Noncontrolling Interest, Ownership Percentage by Parent |  | 80.10% |

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