Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

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

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481549/505-30-45-1

+ Details

Name:	us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

+ Details

Name:	us-gaap_TreasuryStockSharesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481549/505-30-45-1

+ Details

Name:	us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_TreasuryStockCommonMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ShareRepurchaseProgramAxis=spb_OpenMarketPurchasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ShareRepurchaseProgramAxis=spb_PrivatePurchasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ShareRepurchaseProgramAxis=spb_AcceleratedShareRepurchaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SHAREHOLDERS' EQUITY - Schedule of Activity of Common Stock Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended							4 Months Ended	9 Months Ended
	Jun. 29, 2025	Mar. 30, 2025	Feb. 28, 2025	Dec. 29, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2025	Jun. 29, 2025	Jun. 30, 2024
Equity, Class of Treasury Stock [Line Items]
Number of Shares Repurchased (in shares)	0.9				1.6				3.7	7.4
Average price per share (in dollars per share)	$ 59.88				$ 88.72				$ 78.30	$ 76.66
Amount	$ 54.4	$ 159.9		$ 72.9		$ 97.6
Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Amount	$ 54.4	$ 159.9		$ 72.9	$ 142.2	$ 97.6			$ 287.2	$ 565.9
Open Market Purchases
Equity, Class of Treasury Stock [Line Items]
Number of Shares Repurchased (in shares)	0.9		1.8		1.1			0.8	3.7	5.6
Average price per share (in dollars per share)	$ 59.88				$ 86.22				$ 78.30	$ 77.48
Amount			$ 150.0					$ 50.0
Open Market Purchases \| Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Amount	$ 54.4				$ 92.2				$ 287.2	$ 432.7
Private Purchases
Equity, Class of Treasury Stock [Line Items]
Number of Shares Repurchased (in shares)	0.0				0.5				0.0	0.5
Average price per share (in dollars per share)	$ 0				$ 93.74				$ 0	$ 93.74
Private Purchases \| Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Amount	$ 0.0				$ 50.0				$ 0.0	$ 50.0
ASR
Equity, Class of Treasury Stock [Line Items]
Number of Shares Repurchased (in shares)									0.0	1.3
Average price per share (in dollars per share)									$ 0	$ 65.84
Amount							$ 0.0
ASR \| Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Amount							$ 83.2		$ 0.0	$ 83.2