XML 145 R117.htm IDEA: XBRL DOCUMENT
v3.23.3

FAIR VALUE MEASUREMENTS - Summary of Fair Value of Assets and Liabilities (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021 | Aug. 13, 2021 | Mar. 17, 2021 | Oct. 22, 2019 | Dec. 15, 2016
--- | --- | --- | --- | --- | --- | --- | ---
Senior Notes | Senior Notes due 2031 – 4.000% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Interest rate (percent) | 4.00% | 4.00% |  |  | 4.00% |  |
Senior Notes | Senior Notes due 2032 – 4.375% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Interest rate (percent) | 4.375% | 4.375% |  | 4.375% |  |  |
Senior Notes | Senior Notes - 4.500% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Interest rate (percent) | 4.50% | 4.50% |  |  |  | 4.50% |
Senior Notes | Senior Notes due 2026 – 5.250% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Interest rate (percent) | 5.25% | 5.25% |  |  |  |  | 5.25%
Reported Value Measurement | Fair value, inputs, level 2 | Senior Notes | Senior Notes due 2031 – 4.000% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | $ 500.0 | $ 500.0 |  |  |  |  |
Reported Value Measurement | Fair value, inputs, level 2 | Senior Notes | Senior Notes due 2032 – 4.375% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 400.0 | 400.0 |  |  |  |  |
Reported Value Measurement | Fair value, inputs, level 2 | Senior Notes | Senior Notes - 4.500% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 450.0 | 450.0 |  |  |  |  |
Reported Value Measurement | Fair value, inputs, level 2 | Senior Notes | Senior Notes due 2026 – 5.250% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 250.0 | 250.0 |  |  |  |  |
Reported Value Measurement | Fair value, inputs, level 2 | Receivables facility |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 0.0 | 75.0 |  |  |  |  |
Reported Value Measurement | Fair value, inputs, level 2 | Credit Facilities | Revolving loans |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 88.3 | 300.5 |  |  |  |  |
Reported Value Measurement | Fair value, inputs, level 2 | Credit Facilities | Term loans |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 925.0 | 975.0 |  |  |  |  |
Estimate of Fair Value Measurement | Fair value, inputs, level 2 | Senior Notes | Senior Notes due 2031 – 4.000% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 380.0 | 350.6 |  |  |  |  |
Estimate of Fair Value Measurement | Fair value, inputs, level 2 | Senior Notes | Senior Notes due 2032 – 4.375% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 304.0 | 284.0 |  |  |  |  |
Estimate of Fair Value Measurement | Fair value, inputs, level 2 | Senior Notes | Senior Notes - 4.500% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 366.8 | 325.7 |  |  |  |  |
Estimate of Fair Value Measurement | Fair value, inputs, level 2 | Senior Notes | Senior Notes due 2026 – 5.250% |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 233.1 | 230.0 |  |  |  |  |
Estimate of Fair Value Measurement | Fair value, inputs, level 2 | Receivables facility |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 0.0 | 75.0 |  |  |  |  |
Estimate of Fair Value Measurement | Fair value, inputs, level 2 | Credit Facilities | Revolving loans |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 88.3 | 300.5 |  |  |  |  |
Estimate of Fair Value Measurement | Fair value, inputs, level 2 | Credit Facilities | Term loans |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 925.0 | 975.0 |  |  |  |  |
Fair Value, Measurements, Recurring | Reported Value Measurement | Fair value, inputs, level 1 |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Cash equivalents | 1.2 | 64.3 |  |  |  |  |
Fair Value, Measurements, Recurring | Reported Value Measurement | Fair value, inputs, level 1 | Investment securities in non-qualified retirement plan assets |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Other | 36.3 | 38.4 |  |  |  |  |
Fair Value, Measurements, Recurring | Reported Value Measurement | Fair value, inputs, level 2 | Other Long-term Debt |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 0.4 | 12.7 |  |  |  |  |
Fair Value, Measurements, Recurring | Reported Value Measurement | Fair value, inputs, level 3 | Convertible debt investments |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Convertible debt investments | 85.8 | 117.0 |  |  |  |  |
Fair Value, Measurements, Recurring | Reported Value Measurement | Fair value, inputs, level 3 | Loans receivable |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Other | 0.0 | 32.8 |  |  |  |  |
Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement | Fair value, inputs, level 1 |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Cash equivalents | 1.2 | 64.3 |  |  |  |  |
Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement | Fair value, inputs, level 1 | Investment securities in non-qualified retirement plan assets |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Other | 36.3 | 38.4 |  |  |  |  |
Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement | Fair value, inputs, level 2 | Other Long-term Debt |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Long-term debt | 0.4 | 12.7 |  |  |  |  |
Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement | Fair value, inputs, level 3 | Convertible debt investments |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Convertible debt investments | 85.8 | 117.0 | $ 190.3 |  |  |  |
Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement | Fair value, inputs, level 3 | Loans receivable |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Other | $ 0.0 | $ 32.8 |  |  |  |  |

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
Name: | us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
Name: | us-gaap_LongTermDebtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of other assets. + References No definition available. + Details
Name: | us-gaap_OtherAssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=smg_A4000SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=smg_A4375SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=smg_SeniorNotes4500PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=smg_SeniorNotes5250PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=smg_MasterAccountsReceivablePurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_CreditFacilityAxis=smg_TermLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_SecuritiesInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=smg_OtherLongtermDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ConvertibleDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_LoansReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |