Entity tax identification number Entity Tax Identification Number Rollover EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Less certain deemed distributions of participant loans and related interest EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Increase (Decrease) from Deemed Distribution Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Self-directed brokerage accounts EBP, Self-Directed Brokerage Account [Member] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Maximum borrowing, amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Text Block] Investments, at fair value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Money market fund Money Market Funds [Member] Level 1 Fair Value, Inputs, Level 1 [Member] EBP, Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] EBP, Investment, Fair Value and NAV [Abstract] Total assets EBP, Asset Assets EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions to net assets attributed to: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payment of benefits EBP, Payment to Participant [Policy Text Block] Transfers to U.S qualified pension plans EBP, Change in Net Asset Available for Benefit, Transfer to (from) Plan Trustee EBP, Trustee [Member] Total liabilities EBP, Liability Participant loan, maximum borrowing term EBP, Note Receivable From Participant, Maximum Borrowing Term EBP, Note Receivable From Participant, Maximum Borrowing Term EBP, Employee [Domain] EBP, Employee [Domain] EBP, Employee [Domain] Amendment Flag Amendment Flag Less certain deemed distributions of participant loans EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Deemed Distribution Basis of presentation EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Securities receivable EBP, Investment Sale, Receivable Investment, number of shares (in shares) EBP, Investment, Number of Shares EBP, Description of Plan and Accounting Change [Abstract] Receivables: EBP, Receivable [Abstract] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Investments [Domain] Investments [Domain] Use of estimates EBP, Use of Estimate [Policy Text Block] EBP, Related Party and Party-in-Interest [Domain] EBP, Related Party and Party-in-Interest [Domain] Schedule H; Line 4i – Schedule of Assets (Held At End of Year) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash EBP, Related Party and Party-in-Interest [Axis] EBP, Related Party and Party-in-Interest [Axis] Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Participants EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Interest and dividend income EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Plan number EBP, Plan Number EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] DESCRIPTION OF THE PLAN EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] Maximum number of loans EBP, Note Receivable From Participant, Account, Maximum Number Of Loans EBP, Note Receivable From Participant, Account, Maximum Number Of Loans EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Rollover contributions EBP, Contribution [Policy Text Block] Valvoline Inc. common stock EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Basis spread on variable rate EBP, Participant Loan, Basis Spread On Variable Rate EBP, Participant Loan, Basis Spread On Variable Rate Investment income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Non-Hourly Employees EBP, Non-Hourly Employees [Member] EBP, Non-Hourly Employees Investment, Identifier [Axis] Investment, Identifier [Axis] Administrative expenses Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Requisite service period EBP, Requisite Service Period EBP, Requisite Service Period Document Information [Line Items] Document Information [Line Items] Maximum annual compensation to total compensation, percentage EBP, Participant Contribution, Maximum Annual Compensation to Total Compensation, Percentage EBP, Participant Contribution, Maximum Annual Compensation to Total Compensation, Percentage Participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Basic retirement contribution, percentage of eligible compensation EBP, Employer Contribution, Basic Retirement, Participation Compensation, Percentage EBP, Employer Contribution, Basic Retirement, Participation Compensation, Percentage Total Increase in net assets per Form 5500 EBP, Form 5500 Caption, Net Income (Loss) EBP, Tax Status [Table] EBP, Tax Status [Table] Increase in net assets Increase in net assets per the financial statements EBP, Change in Net Asset Available for Benefit, Increase (Decrease) TRANSACTIONS WITH PARTIES-IN-INTEREST EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Employer contributions EBP, Employer Contribution, Receivable Automatic deferral rate EBP, Participant Contribution, Automatic, Deferral Rate Benefits paid to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Current Value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] Securities payable EBP, Liability for Investment Purchase EBP, Tax Status [Abstract] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Administration expenses EBP, Expense [Policy Text Block] RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Notes receivable from participants EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment valuation and income recognition EBP, Investment [Policy Text Block] Participant contributions EBP, Participant Contribution, Receivable Total Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Document Type Document Type Investment Advisor EBP, Other Related Party and Party-in-Interest [Member] Involuntary cash-out limit EBP, Involuntary Cash-out Limit EBP, Involuntary Cash-out Limit Entity Central Index Key Entity Central Index Key Participant loan, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Collective trust funds Common Collective Trust [Member] Net assets available for benefits EBP, Net Asset Available for Benefit [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Employee [Axis] EBP, Employee [Axis] EBP, Employee Deductions from net assets attributed to: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Notes receivable from participants EBP, Note Receivable from Participant Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Liabilities EBP, Liability [Abstract] TAX STATUS OF THE PLAN EBP, Tax Status [Text Block] Notes receivable from participants, cost EBP, Asset Held for Investment, Participant Loan, Cost EBP, Asset Held for Investment, Participant Loan, Cost Participant loan, minimum borrowing term EBP, Note Receivable From Participant, Minimum Borrowing Term EBP, Note Receivable From Participant, Minimum Borrowing Term Maximum borrowing, to total account, percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Participant direct rollover period EBP, Participant Direct Rollover Period EBP, Participant Direct Rollover Period Document Information [Table] Document Information [Table] Hourly Employees EBP, Hourly Employees [Member] EBP, Hourly Employees Notes receivable from participants EBP, Note Receivable from Participant [Policy Text Block] Total investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Redemption, notice period EBP, Fair Value, Investment, NAV, Redemption, Notice Period EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Net assets available for benefits Beginning of year End of year Net assets available for benefits per financial statements EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] EBP 002 EBP 002 [Member] EBP 002 Matching percentage EBP, Employer Contribution, Matching Percentage Net assets available for benefits per Form 5500 EBP, Form 5500 Caption, Net Assets NAV Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]