Miracle-Gro Miracle-Gro [Member] Miracle-Gro Customer [Domain] Customer [Domain] Hydro-Logic Purification Systems, Inc. Hydro-Logic Purification Systems, Inc. [Member] Hydro-Logic Purification Systems, Inc. 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Noncash investing activities for unpaid liabilities incurred Capital Expenditures Incurred but Not yet Paid Total change in other comprehensive loss attributable to: Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Other liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Debt, weighted average interest rate (percentage) Debt, Weighted Average Interest Rate Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Loans receivable Loans Receivable [Member] Financing cash flows from finance leases Finance Lease, Principal Payments Retiree Contribution Retiree Contribution [Member] Retiree Contribution $236.53 - $236.53 Exercise Price Range, Three [Member] Exercise Price Range, Three Fixed rate (percentage) Derivative, Fixed Interest Rate Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) [Member] Basic net income (loss) per common share (USD per share) Earnings Per Share, Basic AeroGrow AeroGrow [Member] AeroGrow REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] Heating Oil Heating Oil [Member] Beginning Balance (in shares) Ending Balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Document Type Document Type Less unamortized debt issuance costs Unamortized Debt Issuance Expense Raw materials Inventory, Raw Materials, Gross Fair Value Measurement [Domain] Fair Value Measurement [Domain] Diluted income (loss) per common share: Diluted Income (Loss) Per Common Share: Earnings Per Share, Diluted [Abstract] Schedule II - Valuation and Qualifying Accounts SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Senior Notes – 5.250% Senior Notes, 5.250 Percent [Member] Senior Notes, 5.250 [Member] Cash provided by (used in) investing activities from discontinued operations Cash Provided by (Used in) Investing Activities, Discontinued Operations Entity Current Reporting Status Entity Current Reporting Status Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Accrued pension, postretirement and executive retirement assets Noncurrent assets Assets for Plan Benefits, Defined Benefit Plan Machinery and equipment Machinery and Equipment [Member] Net deferred tax liability Deferred Tax Liabilities, Net Derivative asset Derivative Asset, Fair Value, Gross Asset 2022 Unrecorded Unconditional Purchase Obligation, to be Paid, Year One Property, plant and equipment Deferred Tax Liabilities, Property, Plant and Equipment Plan participants’ contributions Defined Benefit Plan, Fair Value of Plan Assets, Contributions by Plan Participants The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets included in the rollforward of benefit obligation. 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Subsidiaries [Member] Gross deferred tax assets Deferred Tax Assets, Gross Income Tax Authority [Domain] Income Tax Authority [Domain] Percent ownership sold Equity Method Investment, Ownership Percentage Sold Equity Method Investment, Ownership Percentage Sold Environmental Costs Environmental Costs, Policy [Policy Text Block] LEASES Lessee, Finance Leases [Text Block] Amounts accrued for restructuring and other at beginning of year Amounts accrued for restructuring and other at end of year Restructuring Reserve Operating and exit costs Disposal Group, Including Discontinued Operation, Operating Income (Loss) Trading Symbol Trading Symbol Increase in fair value Increase (Decrease) in Fair Value Adjustments on Other Assets (Liabilities) Carried at Fair Value under Fair Value Option Current liabilities: Liabilities, Current [Abstract] Schedule of Intrinsic Value of Stock Option Awards Outstanding and Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] Defined Contribution Plan Tranches [Axis] Defined Contribution Plan Tranches [Axis] Defined Contribution Plan Tranches [Axis] Statutory tax benefit of net operating loss carryovers and related valuation allowances Operating Loss Carryforwards, Valuation Allowance Total amount accrued Liability, Defined Benefit Plan Restructuring Plan [Domain] Restructuring Plan [Domain] Treasury shares, beginning balance (in shares) Treasury shares, ending balance (in shares) Shares, Outstanding Exercisable (USD per share) WTD. 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RIV Capital, Inc. [Member] RIV Capital, Inc. 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SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Finance leases, weighted average remaining term (in years) Finance Lease, Weighted Average Remaining Lease Term Lease liabilities Deferred Tax Assets, Lease Liabilities Deferred Tax Assets, Lease Liabilities Acquisition of remaining noncontrolling interest in Aerogrow Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Treasury share issuances Stock Issued During Period, Value, Treasury Stock Reissued Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Capital in Excess of Stated Value Additional Paid-in Capital [Member] Gross benefits paid Defined Benefit Plan, Fair Value Of Benefits Paid The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. 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Legal Entity [Axis] Legal Entity [Axis] Award Type [Axis] Award Type [Axis] FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Maturities of Operating Lease Liabilities by Fiscal Year Schedule Lessee, Operating Lease, Liability, Maturity [Table Text Block] Percentages of Three Largest Customers Consolidated Net Sales Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Total equity—controlling interest Equity beginning balance Equity ending balance Stockholders' Equity Attributable to Parent Senior Notes – 4.375% 4.375% Senior Notes [Member] 4.375% Senior Notes Marketing Agreement Marketing Agreement [Table Text Block] Tabular disclosure related to the exclusive agency agreement of the entity for certain products. Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Schedule of Supplemental Cash Flow Information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Designated as Hedging Instruments Designated as Hedging Instrument [Member] Gain from change in fair value of loans receivable Gain (Loss) On Change In Fair Value Of Financing Receivable Gain (Loss) On Change In Fair Value Of Financing Receivable Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Document Annual Report Document Annual Report Repayment of Senior Notes Repayments of Senior Debt Growing environment Growing Environment [Member] Growing Environment Purchase of Common Shares Payments for Repurchase of Common Stock Estimated useful economic lives (in years) Property, Plant and Equipment, Useful Life Cash consideration per share (USD per share) Business Acquisition, Share Price Equity: Stockholders' Equity Attributable to Parent [Abstract] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Resin 2821 Plastic Materials, Synthetic Resins and Nonvulcan Elastomers [Member] Payments and other Payments For Restructuring And Other The amount of cash paid during the reporting period for charges associated with restructuring charges and other related expenses. 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Rhizoflora, Inc. [Member] Rhizoflora, Inc. 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