Debt Instrument, Restricted Payment Limitation, Years Two And Thereafter

No definition available.

Name:	smg_DebtInstrumentRestrictedPaymentLimitationYearsTwoAndThereafter
Namespace Prefix:	smg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument Maturity Period

+ References

No definition available.

+ Details

Name:	smg_DebtMaturityPeriod
Namespace Prefix:	smg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest Coverage Ratio

+ References

No definition available.

+ Details

Name:	smg_InterestCoverageRatio
Namespace Prefix:	smg_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Leverage Ratio

+ References

No definition available.

+ Details

Name:	smg_LeverageRatio
Namespace Prefix:	smg_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Leverage Ratio, Restricted Payment Threshold

+ References

No definition available.

+ Details

Name:	smg_LeverageRatioRestrictedPaymentThreshold
Namespace Prefix:	smg_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

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

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=smg_FifthAmendedAndRestatedSeniorSecuredCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=smg_SecuredTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

DEBT - Credit Facilities (Details) $ in Millions		12 Months Ended
DEBT - Credit Facilities (Details) $ in Millions	Jul. 05, 2018 USD ($)	Jan. 01, 2022 USD ($)	Jan. 02, 2021
Debt Instrument [Line Items]
Weighted average interest rate (percentage)		3.60%	3.80%
Revolving Credit Facility
Debt Instrument [Line Items]
Weighted average interest rate (percentage)		1.80%	2.10%
Fifth Amended and Restated Senior Secured Credit Agreement
Debt Instrument [Line Items]
Senior secured credit facilities, maximum borrowing capacity	$ 2,300.0
Leverage ratio		3.32
Interest coverage ratio		8.73
Leverage ratio, restricted payment threshold		4.00
Restricted payment limitation per year		$ 225.0
Fifth Amended and Restated Senior Secured Credit Agreement \| Maximum
Debt Instrument [Line Items]
Leverage ratio		4.50
Fifth Amended and Restated Senior Secured Credit Agreement \| Minimum
Debt Instrument [Line Items]
Interest coverage ratio		3.00
Fifth Amended and Restated Senior Secured Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Senior secured credit facilities, maximum borrowing capacity	1,500.0
Fifth Amended and Restated Senior Secured Credit Agreement \| Secured Term Loan
Debt Instrument [Line Items]
Senior secured credit facilities, maximum borrowing capacity	$ 800.0
Credit Facilities
Debt Instrument [Line Items]
Available borrowing capacity		$ 623.5
Credit Facilities \| Letter of Credit
Debt Instrument [Line Items]
Principal amount		$ 19.9
Credit Facilities \| Fifth Amended and Restated Senior Secured Credit Agreement
Debt Instrument [Line Items]
Debt, maturity period (years)	5 years