XML 93 R80.htm IDEA: XBRL DOCUMENT
v3.22.1

FAIR VALUE MEASUREMENTS - Summary of Fair Value of Assets and Liabilities (Details) - USD ($) $ in Millions | Apr. 02, 2022 | Sep. 30, 2021 | Aug. 13, 2021 | Apr. 03, 2021 | Mar. 17, 2021 | Oct. 22, 2019 | Dec. 15, 2016
--- | --- | --- | --- | --- | --- | --- | ---
Senior notes | 4.000% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Interest rate of debt (percentage) | 4.00% | 4.00% |  | 4.00% | 4.00% |  |
Senior notes | 4.375% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Interest rate of debt (percentage) | 4.375% | 4.375% | 4.375% | 4.375% |  |  |
Senior notes | 4.500% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Interest rate of debt (percentage) | 4.50% | 4.50% |  | 4.50% |  | 4.50% |
Senior notes | 5.250% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Interest rate of debt (percentage) | 5.25% | 5.25% |  | 5.25% |  |  | 5.25%
Carrying Amount | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Cash equivalents | $ 3.8 | $ 222.5 |  | $ 2.4 |  |  |
Carrying Amount | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring | Investment securities in non-qualified retirement plan assets |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Other | 47.4 | 45.0 |  | 43.5 |  |  |
Carrying Amount | Fair value, inputs, level 3 | Fair Value, Measurements, Recurring | Convertible debt investments |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Other | 192.4 | 190.3 |  | 0.0 |  |  |
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Credit facilities | Revolving loans |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 1,135.0 | 0.0 |  | 460.2 |  |  |
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Credit facilities | Term loans |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 650.0 | 670.0 |  | 690.0 |  |  |
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Senior notes | 4.000% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 500.0 | 500.0 |  | 500.0 |  |  |
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Senior notes | 4.375% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 400.0 | 400.0 |  | 0.0 |  |  |
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Senior notes | 4.500% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 450.0 | 450.0 |  | 450.0 |  |  |
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Senior notes | 5.250% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 250.0 | 250.0 |  | 250.0 |  |  |
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Receivables facility |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 400.0 | 0.0 |  | 160.0 |  |  |
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Other debt |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 13.6 | 11.9 |  | 7.6 |  |  |
Estimated Fair Value | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Cash equivalents | 3.8 | 222.5 |  | 2.4 |  |  |
Estimated Fair Value | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring | Investment securities in non-qualified retirement plan assets |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Other | 47.4 | 45.0 |  | 43.5 |  |  |
Estimated Fair Value | Fair value, inputs, level 3 | Fair Value, Measurements, Recurring | Convertible debt investments |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Other | 192.4 | 190.3 |  | 0.0 |  |  |
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Credit facilities | Revolving loans |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 1,135.0 | 0.0 |  | 460.2 |  |  |
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Credit facilities | Term loans |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 650.0 | 670.0 |  | 690.0 |  |  |
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Senior notes | 4.000% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 437.5 | 498.8 |  | 497.5 |  |  |
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Senior notes | 4.375% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 352.0 | 402.0 |  | 0.0 |  |  |
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Senior notes | 4.500% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 420.8 | 466.9 |  | 464.6 |  |  |
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Senior notes | 5.250% Senior Notes |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 252.5 | 258.1 |  | 261.6 |  |  |
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Receivables facility |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | 400.0 | 0.0 |  | 160.0 |  |  |
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Other debt |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Debt instruments | $ 13.6 | $ 11.9 |  | $ 7.6 |  |  |

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 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 -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + 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_A4500SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=smg_A5250SeniorNotesMember
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_FairValueInputsLevel1Member
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_FairValueByAssetClassAxis=us-gaap_SecuritiesInvestmentMember
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_FairValueByAssetClassAxis=us-gaap_ConvertibleDebtSecuritiesMember
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=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_LongtermDebtTypeAxis=smg_MasterAccountsReceivablePurchaseAgreementMember
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_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |