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Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions | Dec. 29, 2019 | Sep. 30, 2019
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Revenue Recognition [Abstract] |  |
Allowance for product returns | $ 20.2 | $ 19.2

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- Definition Allowance For Product Returns + References No definition available. + Details
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Namespace Prefix: | spb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration