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v3.21.1

Leases - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 04, 2021 | Mar. 29, 2020 | Apr. 04, 2021 | Mar. 29, 2020
Leases [Abstract] |  |  |  |
Commitments related to leases that have not yet commenced | $ 19.7 |  | $ 19.7 |
Lease and sublease income | $ 0.6 | $ 0.5 | $ 1.1 | $ 1.0

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- Definition Lease And Sublease Income + References No definition available. + Details
Name: | spb_LeaseAndSubleaseIncome
Namespace Prefix: | spb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Lessee, Operating And Finance Lease, Lease Not Yet Commenced, Liability + References No definition available. + Details
Name: | spb_LesseeOperatingAndFinanceLeaseLeaseNotYetCommencedLiability
Namespace Prefix: | spb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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