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Restructuring - Additional Information (Detail) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 USD ($) | Sep. 26, 2015 USD ($) | Sep. 30, 2016 USD ($) Person | Sep. 26, 2015 USD ($) | Dec. 31, 2015 Person
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Number of employees | Person |  |  | 475 |  | 500
Total restructuring costs | $ 7.3 | $ 7.2 | $ 19.9 | $ 17.6 |
Water Quality Systems [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Number of employees | Person |  |  | 75 |  | 100
Total restructuring costs | 0.2 | 1.5 | $ 4.5 | 4.8 |
Flow & Filtration Solutions [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Number of employees | Person |  |  | 100 |  | 200
Total restructuring costs | 0.0 | 3.5 | $ 2.6 | 7.2 |
Technical Solutions [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Number of employees | Person |  |  | 300 |  | 200
Total restructuring costs | 7.1 | 2.2 | $ 11.0 | 5.6 |
Corporate and Other [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Total restructuring costs | $ 0.0 | $ 0.0 | $ 1.8 | $ 0.0 |

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