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LEASES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Lease and sublease income	$ 2.3	$ 2.1

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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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- References

No definition available.

+ Details

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