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Acquisitions - Summary of Acquisition and Integration Related Charges Incurred (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | $ 24.4 | $ 62.4 | $ 34.8
SB/RH Merger |  |  |
Business Acquisition [Line Items] |  |  |
Integration costs | 0 | 3.5 | 10.2
Legal and professional fees | 0 | 0 | 1.5
Employee termination charges | 2.4 | 0.2 | 3.9
Total acquisition and integration related charges | 2.4 | 3.7 | 15.6
HHI Business |  |  |
Business Acquisition [Line Items] |  |  |
Integration costs | 8.7 | 8.9 | 0
Legal and professional fees | 2.2 | 27.7 | 0
Employee termination charges | 0.2 | 0.3 | 0
Total acquisition and integration related charges | 11.1 | 36.9 | 0
Compass |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | 0.8 | 9.2 | 0
CorAmerica [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | 1.1 | 0 | 0
FOH [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | 0.1 | 0 | 0
Liquid Fence [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | 3.5 | 0 | 0
FURminator |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | 0.1 | 2.3 | 7.9
BlackFlag |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | 0 | 0.2 | 3.4
Shaser Biosciences, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | 0.9 | 4.8 | 0
Other |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition and integration related charges | $ 4.4 | $ 5.3 | $ 7.9

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- Definition Business acquisition employee termination charges. + References No definition available. + Details
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- Definition Business acquisition legal and professional fees. + References No definition available. + Details
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- Details
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- Definition Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs. + References No definition available. + Details
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