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REVENUE RECOGNITION - Schedule of Rollforward of Allowance for Product Returns (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Allowance For Product Returns [Roll Forward] |  |  |
Beginning Balance | $ 12.8 | $ 15.5 | $ 11.8
Charged to Profit & Loss | 28.6 | 8.7 | 12.4
Deductions | (27.3) | (11.2) | (19.8)
Other Adjustments | 0.3 | (0.2) | 11.1
Ending Balance | $ 14.4 | $ 12.8 | $ 15.5

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

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- Definition Allowance For Product Returns Other Adjustments + References No definition available. + Details
Name: | spb_AllowanceForProductReturnsOtherAdjustments
Namespace Prefix: | spb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Allowance For Product Returns + References No definition available. + Details
Name: | spb_AllowanceForProductReturnsRollForward
Namespace Prefix: | spb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Allowance For Product Returns Write Offs + References No definition available. + Details
Name: | spb_AllowanceForProductReturnsWriteOffs
Namespace Prefix: | spb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Provision For Product Returns + References No definition available. + Details
Name: | spb_ProvisionForProductReturns
Namespace Prefix: | spb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration