XML 112 R95.htm IDEA: XBRL DOCUMENT
v3.21.2

EQUITY - Schedule of Share-Based Compensation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Equity [Abstract] |  |  |
Share-based compensation | $ 40.6 | $ 57.9 | $ 38.4
Related tax benefit recognized | $ 7.4 | $ 14.6 | $ 9.5

X
- Definition Share-Based Compensation Expense, Including Certain Impairment, Restructuring, And Other Charges + References No definition available. + Details
Name: | smg_ShareBasedCompensationExpenseIncludingCertainImpairmentRestructuringAndOtherCharges
Namespace Prefix: | smg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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