Earnings Per Share - SBH (Narrative) (Details) shares in Millions, $ in Millions		6 Months Ended
Jul. 13, 2018 USD ($)	Mar. 31, 2019 shares
Upward adjustment	$ 200.0
Increase in total outstanding shares \| shares		20.6
HRG [Member]
Net indebtedness and transaction expenses	$ 328.2
HRG [Member] \| HRG Common Stock [Member]
Reverse stock split conversion	0.1613

Business Combination Upward Adjustment

No definition available.

Name:	spb_BusinessCombinationUpwardAdjustment
Namespace Prefix:	spb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Stock Outstanding During Period Shares Period Increase Decrease

+ References

No definition available.

+ Details

Name:	spb_StockOutstandingDuringPeriodSharesPeriodIncreaseDecrease
Namespace Prefix:	spb_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Total current liabilities of the broker-dealer, less certain exceptions as defined.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher SEC
-Name Rule 15c3-1
-Number 240
-Section 15c3-1

+ Details

Name:	us-gaap_AggregateIndebtedness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

+ Details

Name:	us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=spb_HrgGroupIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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