Business to Business Products Business to Business Segment [Member] Business to Business Segment [Member] Variable Rate [Domain] Variable Rate [Domain] Net Loss Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Noncontrolling Interest Accrued expenses Accrued Liabilities, Current Statistical Measurement [Domain] Statistical Measurement [Domain] Inventory reserves Inventory Valuation Reserves Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Related Party Transaction Related Party Transaction [Line Items] Intangible assets, net of accumulated amortization of $8,394 and $8,341 at April 30, 2024 and July 31, 2023, respectively Trademarks and patents, net The total amount, net of amortization, as of the balance sheet date for 1) the rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style for a projected indefinite period of benefit and 2) costs pertaining to the exclusive legal rights granted to the owner of the patent to exploit an invention or a process for a period of time specified by law. Award Type [Domain] Award Type [Domain] Non-vested restricted stock outstanding, beginning balance Non-vested restricted stock outstanding, ending balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Variable interest rate Line of Credit Facility, Interest Rate at Period End Debt Debt Disclosure [Text Block] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Effect of exchange rate changes on Cash and Cash Equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Impairment of patents Impairment of Intangible Assets, Finite-Lived Spare parts Inventory, Parts and Components, Net of Reserves Segment Reporting [Abstract] Segment Reporting [Abstract] Accounts Payable Accounts Payable To Related Parties Accounts Payable, Current Series D Senior Notes Series D Senior Notes [Member] Series D Senior Notes Total Other Expense, Net Total Other Expenses, Net Nonoperating Income (Expense) Revenue by Principal Product Disaggregation of Revenue [Line Items] Liability for Payments in Advance Deferred Revenue, Current Effect of dilution - Net Income Dilutive Securities, Effect on Basic Earnings Per Share Director Director [Member] Leases Lessee, Leases [Policy Text Block] Revenue Recognition Revenue [Policy Text Block] Current Liabilities Liabilities, Current [Abstract] Georgia Landfill Modification Reserve Payments Accrual for Environmental Loss Contingencies, Payments Net unamortized debt issuance costs Debt Issuance Costs, Noncurrent, Net Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Dividends paid Payments of Ordinary Dividends, Common Stock Diluted Common (in dollars per share) Diluted EPS Earnings Per Share, Diluted Accounts payable Increase (Decrease) in Accounts Payable and Income Taxes Payable The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business PLUS the increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction. Less Treasury Stock, at cost (3,695,982 Common and 362,649 Class B shares at April 30, 2024 and 3,658,989 Common and 351,641 Class B shares at July 31, 2023) Treasury Stock, Value Treasury stock, common shares Treasury Stock, Beginning of Period (in shares) Treasury Stock, End of Period (in shares) Treasury Stock, Common, Shares Line of Credit Line of Credit [Member] Schedule of Net Benefit Costs Schedule of Net Benefit Costs [Table Text Block] Trading Symbol Trading Symbol Letters of Credit Outstanding, Amount Letters of Credit Outstanding, Amount Notes Payable, Fair Value Long-Term Debt, Fair Value Net Income Attributable to Oil-Dri Net Income Attributable to Oil-Dri Net Income (Loss) Attributable to Parent Total Current Liabilities Liabilities, Current Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Lessee, Operating Leases Lessee, Operating Leases [Text Block] LIABILITIES & STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Finite-Lived Intangible Assets, Future Amortization Expense Finite-Lived Intangible Assets Finite-Lived Intangible Assets [Line Items] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Cost of Goods Sold Cost of Goods and Services Sold Service cost Defined Benefit Plan, Service Cost Award Vesting Period (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Class B Common Class B [Member] New Accounting Pronouncements or Change in Accounting Principle New Accounting Pronouncements or Change in Accounting Principle [Line Items] Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Goodwill Goodwill Equity Components [Axis] Equity Components [Axis] Condensed Consolidated Statements of Comprehensive Income [Abstract] Condensed Consolidated Statements of Comprehensive Income [Abstract] Condensed Consolidated Statements of Comprehensive Income [Abstract] Accrued expenses Increase (Decrease) in Accrued Liabilities Number Available (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Entity Small Business Entity Small Business 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Four Accumulated Other Comprehensive (Loss) Income Comprehensive Income (Loss) Note [Text Block] Local Phone Number Local Phone Number Dividends Declared Per Share (in dollars per share) Common Stock, Dividends, Per Share, Declared Net income assuming dilution Net Income (Loss) Attributable to Parent, Diluted Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Retirement Plan Type [Domain] Retirement Plan Type [Domain] Fiscal year 2026 Lessee, Operating Lease, Liability, to be Paid, Rolling Year Three Schedule of Restricted Stock Transactions Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Total Adjustments Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Payments of debt issuance costs Payments of Debt Issuance Costs Maximum Borrowing Capacity for letters of credit Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases Postretirement health benefits Liability, Defined Benefit Plan, Noncurrent Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] Operating lease payments due within next fiscal year as of April 30, 2024 Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Debt Instrument, Maturity Date Range, Start Debt Instrument, Maturity Date Range, Start Payables and Accruals [Abstract] (Increase) Decrease in assets: Increase (Decrease) in Operating Assets [Abstract] Other Assets Other Assets, Noncurrent [Abstract] Prinicipal Products [Domain] Product and Service [Domain] Schedule of Accounts Payable and Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Interest expense Interest Expense, Debt Other Other Noncurrent Assets Other Noncurrent Assets Lease cost Lease, Cost [Table Text Block] Inventories Increase (Decrease) in Inventories Fiscal year 2025 Lessee, Operating Lease, Liability, to be Paid, Rolling Year Two CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Award Type [Axis] Award Type [Axis] Medical Cost Trend Assumption Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year Granted, number of shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Plan Name [Domain] Plan Name [Domain] Document Quarterly Report Document Quarterly Report Capital expenditures accrued, but not paid Capital Expenditures Incurred but Not yet Paid Fair Value Measurement [Domain] Fair Value Hierarchy and NAV [Domain] Number Authorized (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Cost Property, Plant and Equipment, Gross Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Related Party Transactions Disclosure Related Party Transactions Disclosure [Text Block] Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Entity File Number Entity File Number Operating lease liabilities Operating Lease, Liability, Current Amortization of intangible assets Amortization of Intangible Assets Entity Shell Company Entity Shell Company Dividend Distribution Percentage Dividend Distribution Percentage Dividend Distribution Percentage Other liabilities Increase (Decrease) in Other Operating Liabilities Cash and Cash Equivalents, Beginning of Period Cash and Cash Equivalents, End of Period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Interest income Investment Income, Interest Operating lease cost Operating Lease, Cost Common stock, shares issued Common Stock, Shares, Issued Vested, number of shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Gross Profit Gross Profit Security Exchange Name Security Exchange Name Thereafter Lessee, Operating Lease, Liability, to be Paid, after Rolling Year Five Shelf Note, Expiration Date Shelf Note, Expiration Date Expiration date for the maximum aggregate principal of unsecured notes available for purchase, at lender's discretion on an uncommitted basis. Selling, General and Administrative Expenses Selling, General and Administrative Expense Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Balance, beginning Accumulated Other Comprehensive Income (Loss), Balance, ending Accumulated Other Comprehensive Income (Loss), Net of Tax Other comprehensive income before reclassifications, net of tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Cumulative Translation Adjustment Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Loss on pension termination Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Maximum Maximum [Member] Total Comprehensive Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Cash Equivalents Cash Equivalents, at Carrying Value Depreciation and amortization Depreciation, Amortization and Accretion, Net Property, Plant and Equipment Property, Plant and Equipment, Net [Abstract] Document Type Document Type Loss on pension termination Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement Accumulated Other Comprehensive Income [Abstract] Accumulated Other Comprehensive Income [Abstract] Accumulated Other Comprehensive Income [Abstract] Short-term operating lease cost Short-Term Lease, Cost Type of Adoption [Domain] Accounting Standards Update [Domain] Entity Address, Address Line One Entity Address, Address Line One Purchases of Treasury Stock Treasury Stock, Value, Acquired, Cost Method Entity Address, Address Line Two Entity Address, Address Line Two Inventories Inventory, Policy [Policy Text Block] Series B Senior Notes Series B Senior Notes [Member] Series B Senior Notes [Member] Disclosure of Compensation Related Costs, Share-based Payments Share-Based Payment Arrangement [Text Block] Deferred Revenue Arrangement Deferred Revenue Arrangement [Line Items] Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Georgia Landfill Modification Reserve, Period Increase Accrual for Environmental Loss Contingencies, Period Increase (Decrease) Variable Rate [Axis] Variable Rate [Axis] Income Statement [Abstract] Inventory Inventory [Line Items] Title of 12(b) Security Title of 12(b) Security Related Party [Domain] Related Party, Type [Domain] Defined Benefit Plans and Other Postretirement Benefit Plans Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Indefinite-lived trademarks Indefinite-Lived Intangible Assets (Excluding Goodwill) Non-vested restricted stock outstanding, weighted average grant date fair value, beginning balance Non-vested restricted stock outstanding, weighted average grant date fair value, ending balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Net issuance of stock under long-term incentive plans Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Dividends payable Dividends Payable, Current Fiscal year 2024 (remaining three months) Lessee, Operating Lease, Liability, to be Paid, Next Rolling 12 Months Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Entity Tax Identification Number Entity Tax Identification Number Inventories, net Total Inventories Inventory, Net Average Shares Outstanding Weighted Average Shares Outstanding [Abstract] Weighted Average Shares Outstanding [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Entity Interactive Data Current Entity Interactive Data Current Revenue by Principal Product by Operating Segment [Table] Disaggregation of Revenue [Table] Purchase of treasury stock Payments for Repurchase of Common Stock Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Supplemental disclosure of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Segment [Domain] Segments [Domain] Share-based Compensation Arrangement by Share-based Payment Award Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Retained earnings Retained Earnings (Accumulated Deficit) Commitments and Contingencies Disclosure [Abstract] Increase (Decrease) in liabilities: Increase (Decrease) in Operating Liabilities [Abstract] Face Amount Debt Instrument, Face Amount Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Current Assets Assets, Current [Abstract] Leases [Abstract] Leases [Abstract] Other Accounts Payable and Other Accrued Liabilities, Current Payments In Advance Up-front Payment Arrangement [Member] Fiscal year 2028 Lessee, Operating Lease, Liability, to be Paid, Rolling Year Five Entity Address, State or Province Entity Address, State or Province CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] 2025 Finite-Lived Intangible Asset, Expected Amortization, Year One Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Common & Class B Stock, Beginning of Period (in shares) Common Stock & Class B Stock, End of Period (in shares) Common Stock, Shares, Outstanding Interest cost Defined Benefit Plan, Interest Cost Accounts receivable Increase (Decrease) in Accounts and Other Receivables Pension and Other Postretirement Benefits Disclosure Retirement Benefits [Text Block] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Net Cash Used in Investing Activities Net Cash Provided by (Used in) Investing Activities Class of Stock [Domain] Class of Stock [Domain] Income available to stockholders Net Income (Loss) Available to Common Stockholders, Basic Inventories Schedule of Inventory, Current [Table Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Animal Health and Nutrition Animal Health and Nutrition [Member] Information about principal product: Animal Health and Nutrition [Member] Net lease obligation Operating Lease, Liability Retail and Wholesale Products Retail and Wholesale Segment [Member] Retail and Wholesale Segment [Member] Total Liabilities Liabilities Prepaid expenses Increase (Decrease) in Prepaid Expense and Other Assets Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Noncurrent Liabilities Liabilities, Noncurrent [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Pension and Postretirement Health Benefits Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Plan Name [Axis] Plan Name [Axis] Debt Disclosure [Abstract] Number of Reportable Segments Number of Reportable Segments Net Income Per Share Earnings Per Share [Abstract] Common Stock, Value, Issued Common Stock, Value, Issued Land, Mining Property and Mineral Rights Overburden Removal and Mining Costs [Policy Text Block] Description of accounting policy for overburden removal/stripping costs for mined properties and other mining-related costs. Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Other Contingencies Legal Matters and Contingencies [Text Block] Operating Segments Segment Reporting, Policy [Policy Text Block] Total Current Assets Assets, Current 2006 Plan 2006 Plan [Member] 2006 Plan [Member] Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Adjustments for New Accounting Pronouncements [Axis] Accounting Standards Update [Axis] Other, net Other Nonoperating Income (Expense) Entity Filer Category Entity Filer Category Statement [Table] Statement [Table] Current Fiscal Year End Date Current Fiscal Year End Date Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] New Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Accumulated Other Comprehensive (Loss) Income by Component Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Granted, weighted average grant date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Five Segment Income Segment Reporting Information, Operating Income for Reportable Segment Segment Reporting Information, Operating Income for Reportable Segment Postretirement Health Plan Postretirement Health Plan Other Postretirement Benefits Plan [Member] Trade Receivables Accounts Receivable [Policy Text Block] Net Cash Provided by Operating Activities Net Cash Provided by (Used in) Operating Activities Fiscal year 2027 Lessee, Operating Lease, Liability, to be Paid, Rolling Year Four Class of Stock [Axis] Class of Stock [Axis] Entities [Table] Entities [Table] Amortization of Prior service costs Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Unsecured Debt Unsecured Debt Distributed and undistributed earnings on restricted shares Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted Annual Rate Debt Instrument, Interest Rate, Stated Percentage Year that Rate Reaches Ultimate Trend Rate Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Entity Information Entity Information [Line Items] Payments in Advance, Revenue Recognized Deferred Revenue, Revenue Recognized Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Restricted Stock Restricted Stock [Member] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Bleaching Clay and Fluids Purification Bleaching Clay and Fluids Purification [Member] Information about principal product: Bleaching Clay and Fluids Purification [Member] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Cumulative translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Shelf Notes Shelf Notes Maximum aggregate principal of unsecured notes available for purchase, at lender's discretion on an uncommitted basis. Subsequent Events [Abstract] Subsequent Events [Abstract] Income Before Income Taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Fair Value Measurement, Policy Fair Value Measurement, Policy [Policy Text Block] Loss on Impairment of Fixed Assets Tangible Asset Impairment Charges Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Entity Emerging Growth Company Entity Emerging Growth Company Corporate Expenses Corporate Expenses The corporate expenses line represents certain unallocated expenses, including primarily salaries, wages and benefits, purchased services, rent, utilities and depreciation and amortization associated with corporate functions such as research and development, information systems, finance, legal, human resources and customer service. Corporate expenses also include the annual incentive plan bonus accrual. Finished goods Inventory, Finished Goods, Gross Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Document Fiscal Period Focus Document Fiscal Period Focus Non-cash stock-based compensation Share-Based Payment Arrangement, Noncash Expense Georgia Landfill Modification Reserve Accrued Environmental Loss Contingencies, Current Common Common & Class B Stock Common Stock [Member] Pension and postretirement (expenses) benefits (net of tax) Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax City Area Code City Area Code Entity Address, Postal Zip Code Entity Address, Postal Zip Code Product and Service [Axis] Product and Service [Axis] Proceeds from issuance of notes payable Proceeds from Notes Payable Reclamation Asset Retirement Obligation [Policy Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Total Stockholders' Equity Total, Beginning of Period Total, End of Period Equity, Including Portion Attributable to Noncontrolling Interest Trade Promotions and Advertising Accrued Marketing Costs, Current NEW ACCOUNTING PRONOUNCEMENTS [Abstract] NEW ACCOUNTING PRONOUNCEMENTS [Abstract] NEW ACCOUNTING PRONOUNCEMENTS [Abstract] Inventory [Domain] Inventory [Domain] Line of Credit Facility, Expiration Date Line of Credit Facility, Expiration Date Minimum Minimum [Member] Total Property, Plant and Equipment, Net Property, Plant and Equipment, Net Accounts receivable, net of allowances of $1,094 and $1,087 at April 30, 2024 and July 31, 2023, respectively Receivables, Net, Current Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Other Comprehensive (Loss) Income Other Comprehensive (Loss) Income Net current-period other comprehensive (loss) income, net of tax Other Comprehensive Income (Loss), Net of Tax Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Real Estate Tax Accrual for Taxes Other than Income Taxes, Current Dividends Declared Dividends, Common Stock, Cash ASSETS Assets [Abstract] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Common Stock, Voting Rights Common Stock, Voting Rights Industrial and Sports Industrial and Sports [Member] Information about principal product: Industrial and Sports [Member] Other Other Inventory, Gross Net Income Net Income, Including Portion Attributable to Noncontrolling Interest Net Income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Cash Provided by (Used in) Financing Activities Net Cash Provided by (Used in) Financing Activities Deferred income taxes Deferred Income Tax Assets, Net Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retained Earnings Retained Earnings [Member] Total Liabilities & Stockholders’ Equity Liabilities and Equity Other (Expense) Income Nonoperating Income (Expense) [Abstract] Total Other Assets Other Assets, Noncurrent Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement, by Type [Table] Basic Common (in dollars per share) Basic EPS Earnings Per Share, Basic Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Reclamation liability Mine Reclamation and Closing Liability, Noncurrent Series C Senior Notes Series C Senior Notes [Member] Series C Senior Notes Agricultural and Horticultural Agricultural and Horticultural [Member] Information about principal product: Agricultural and Horticultural [Member] Entity Address, City or Town Entity Address, City or Town Operating Segments Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Inventory, Current [Table] Inventory, Current [Table] Income tax payments, net of refunds Income Taxes Paid Total Noncurrent Liabilities Liabilities, Noncurrent Cat Litter Cat Litter [Member] Information about principal product: Cat Litter [Member] Document Transition Report Document Transition Report Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Business Combination, Price of Acquisition, Expected Business Combination, Price of Acquisition, Expected Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Cash dividends declared and accrued, but not paid Dividends Payable Deferred Revenue Deferred Revenue [Domain] Provision for bad debts and cash discounts Accounts Receivable, Credit Loss Expense (Reversal) Inventory [Axis] Inventory [Axis] Forfeitures, weighted average grant date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Deferred income taxes Deferred Income Tax Expense (Benefit) Ultimate Health Care Cost Trend Rate Defined Benefit Plan, Ultimate Health Care Cost Trend Rate Other Current and Noncurrent Liabilities Income Tax, Policy [Policy Text Block] 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Three Forfeitures, number of shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Related Party [Axis] Related Party, Type [Axis] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Net issuance of stock under long-term incentive plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Current maturities of notes payable Senior Notes, Current Unallocated Assets Other Segments [Member] Entity Registrant Name Entity Registrant Name Effect of dilution - Shares Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Other assets Increase (Decrease) in Other Operating Assets Consolidated Statements of Stockholders' Equity [Abstract] Consolidated Statements of Stockholders' Equity [Abstract] Consolidated Statements of Stockholders' Equity [Abstract] 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Two Proceeds from sale of property, plant, and equipment Proceeds from Sale of Property, Plant, and Equipment Document Period End Date Document Period End Date Proceeds from Lines of Credit Proceeds from Lines of Credit Deferred compensation Increase (Decrease) in Deferred Compensation Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Deferred Revenue Arrangement Type [Axis] Deferred Revenue Arrangement Type [Axis] Treasury Stock Treasury Stock, Common [Member] Entity Central Index Key Entity Central Index Key Segment Reporting Information Segment Reporting Information [Line Items] Basis of Statement Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Loss on the disposals of property, plant and equipment Gain (Loss) on Disposition of Property Plant Equipment Share-based Compensation Expense Share-Based Payment Arrangement, Expense Income Tax Expense Income Tax Expense (Benefit) Deferred compensation Deferred Compensation Liability, Classified, Noncurrent Salaries, Wages, Commissions and Employee Benefits Employee-related Liabilities, Current Fair Value Measurements Fair Value Disclosures [Text Block] Amounts reclassified from accumulated other comprehensive income, net of tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Revenue by Principal Product by Operating Segment Disaggregation of Revenue [Table Text Block] Accretion of Asset Retirement Obligation Asset Retirement Obligation, Accretion Expense Inventories Inventory Disclosure [Text Block] Weighted-average remaining lease term - operating leaes Operating Lease, Weighted Average Remaining Lease Term Net Sales Revenue from Contract with Customer, Excluding Assessed Tax Amendment Flag Amendment Flag Amortization of Other actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Accumulated amortization of other intangibles TrademarksAndPatentsAccumulated Amortization The accumulated amount of amortization of the costs pertaining to the rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style for a projected indefinite period of benefit PLUS the accumulated amount of amortization of the costs pertaining to the exclusive legal rights granted to the owner of the patent to exploit an invention or a process for a period of time specified by law. Lessee, Operating Lease, Liability, Payment, Due, Rolling Maturity Lessee, Operating Lease, Liability, to be Paid, Rolling Maturity [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Weighted-average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Senior Notes Senior Notes Interest payments, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Purchases of Treasury Stock (in shares) Treasury Stock, Shares, Acquired Selling, General and Administrative Expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] Notes payable, net of unamortized debt issuance costs of $140 and $173 at April 30, 2024 and July 31, 2023, respectively Senior Notes, Noncurrent Discount rate for net periodic benefit cost Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Packaging Packaging Inventory Packaging Inventory Diluted Common (in shares) Shares assuming dilution Weighted Average Number of Shares Outstanding, Diluted Capital expenditures Payments to Acquire Property, Plant, and Equipment Additional paid-in capital Additional Paid in Capital, Common Stock Additional Paid-in Capital Additional Paid-in Capital [Member] Lease, Cost Lease, Cost [Abstract] Total Assets Assets Assets Cover [Abstract] Cover [Abstract] Subsequent Events Subsequent Events [Text Block] Amortization of Restricted Stock APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Prepaid expenses Other Prepaid Expense, Current Other Other Liabilities, Noncurrent Vested, weighted average grant date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Total Lessee, Operating Lease, Liability, to be Paid Payments to related party Related Party Transaction, Purchases from Related Party Pension Plan Pension Plan [Member] Prime Rate Prime Rate [Member] Dividend Distribution Percentage Increase Dividend Distribution Percentage Increase Dividend Distribution Percentage Increase Operating Segment Disclosure Segment Reporting Disclosure [Text Block] Net Increase in Cash and Cash Equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Total Stockholders' Equity Total Accumulated Other Comprehensive (Loss) Income Equity Component [Domain] Condensed Consolidated Balance Sheet Parenthetical [Abstract] Condensed Consolidated Balance Sheet Parenthetical [Abstract] Condensed Consolidated Balance Sheet Parenthetical [Abstract] Debt Instrument [Line Items] Debt Instrument [Line Items] Statement, Scenario [Axis] Scenario [Axis] Basic Common (in shares) Weighted Average Shares Outstanding Weighted Average Number of Shares Outstanding, Basic Entity Current Reporting Status Entity Current Reporting Status Freight Accrued Freight Accrued Freight Income from Operations Income from Operations Operating Income (Loss) Revenue Recognition [Abstract] Revenue Recognition [Abstract] Segments [Axis] Segments [Axis] Statement Statement [Line Items] Property, Plant and Equipment, Policy Property, Plant and Equipment, Policy [Policy Text Block] Other Comprehensive (Loss) Income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Scenario [Domain] Scenario [Domain] Line of credit amount outstanding Long-Term Line of Credit Stockholders’ Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Noncontrolling Interest Noncontrolling Interest [Member] Debt Instrument, Maturity Date Range, End Debt Instrument, Maturity Date Range, End