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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

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No definition available.

+ Details

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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

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No definition available.

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Name:	spb_LesseeOperatingAndFinanceLeaseLeaseNotYetCommencedLiability
Namespace Prefix:	spb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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No definition available.

+ Details

Name:	us-gaap_LeasesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration