SCHEDULE OF ASSETS (HELD AT END OF YEAR) (Details) - Profit Sharing and Savings Plan $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($)
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
Entity tax identification number	27-4358837
Plan number	002
Notes receivable from participants	$ 61,573
Total Investments and Loans	$ 2,129,935
O'Reilly Automotive, Inc. common stock
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:OReillyAutomotiveIncMember
Current Value	$ 597,747
EBP, Asset Held for Investment, Party-in-Interest [true false]	true
Investment, Identifier [Axis]: Common And Collective Trusts, Fidelity Institutional Asset Management Core Plus - Class I
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:FidelityInstitutionalAssetManagementCorePlusClassIMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 12,966
EBP, Asset Held for Investment, Party-in-Interest [true false]	true
Investment, Identifier [Axis]: Common And Collective Trusts, Harbor Capital Appreciation Fund, R
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:HarborCapitalAppreciationFundRMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 18,139
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2005 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2005TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 3,138
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2010 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2010TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 9,685
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2015 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2015TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 26,608
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2020 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2020TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 54,522
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2025 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2025TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 110,630
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2030 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2030TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 157,248
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2035 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2035TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 187,602
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2040 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2040TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 159,136
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2045 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2045TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 156,023
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2050 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2050TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 142,654
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2055 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2055TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 125,090
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2060 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2060TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 76,322
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Retirement 2065 Trust, K
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceRetirement2065TrustKMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 35,976
Investment, Identifier [Axis]: Common And Collective Trusts, T. Rowe Price Stable Value Common Trust Fund, N
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceStableValueCommonTrustFundNMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember
Current Value	$ 28,356
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, American Beacon Small Cap Value Fund, Institutional
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:AmericanBeaconSmallCapValueFundInstitutionalMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 3,830
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, Artisan International Value Fund Investor Class
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:ArtisanInternationalValueFundInvestorClassMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 1,776
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, BlackRock Equity Dividend Fund, I
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:BlackrockEquityDividendFundIMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 6,649
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, Fidelity 500 Index Fund
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:Fidelity500IndexFundMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 79,575
EBP, Asset Held for Investment, Party-in-Interest [true false]	true
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, Fidelity Extended Market Index Fund
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:FidelityExtendedMarketIndexFundMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 10,507
EBP, Asset Held for Investment, Party-in-Interest [true false]	true
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, Fidelity U.S. Bond Index Fund
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:FidelityU.s.BondIndexFundMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 4,970
EBP, Asset Held for Investment, Party-in-Interest [true false]	true
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, JPMorgan Mid Cap Value Fund, L
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:JpMorganMidCapValueFundLMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 5,187
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, PIMCO Income Fund Institutional Class
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:PimcoIncomeFundInstitutionalClassMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 7,229
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, T. Rowe Price Institutional Mid Cap Equity Growth
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceInstitutionalMidCapEquityGrowthMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 6,665
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, T. Rowe Price QM U.S. Small-Cap Growth Equity Fund
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:T.RowePriceQmU.s.SmallCapGrowthEquityFundMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 6,930
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, Vanguard Federal Money Market Fund
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:VanguardFederalMoneyMarketFundMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 541
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, Vanguard Inflation-Protected Securities Fund, Admiral
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:VanguardInflationProtectedSecuritiesFundAdmiralMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 5,011
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, Vanguard International Growth Fund
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:VanguardInternationalGrowthFundMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 6,561
Investment, Identifier [Axis]: Registered Investment Company Mutual Funds, Vanguard Total International Stock Index Fund, Admiral
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
EBP, Investment, Issuer Name [Extensible Enumeration]	orly:VanguardTotalInternationalStockIndexFundAdmiralMember
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual funds
Current Value	$ 21,089
Maximum
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
Interest rates of notes receivable from participants	10.25%
Minimum
SCHEDULE OF ASSETS (HELD AT END OF YEAR)
Interest rates of notes receivable from participants	4.25%

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

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- Definition

Amount of total assets in schedule of asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, current value of investment, participant loan, and plan interest in master trust.

+ References

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Current value of investment, excluding plan interest in master trust, in schedule of asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract.

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- Definition

Amount, after deemed distribution, of participant loan in schedule of asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

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- Definition

Indicates (true false) whether asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) was transacted with party-in-interest.

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- Definition

Indicates name of issuer of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule I))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph b
-Subparagraph (1)(i)(A)
-Publisher DOL-EBSA

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
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-Publisher DOL-EBSA

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 6
-Paragraph d
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-Publisher DOL-EBSA

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- Definition

Indicates type of investment at current value held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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- Definition

Interest rate on participant loan in schedule of asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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- Definition

Plan number of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), in three-digit numeric format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule I))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule II))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph b
-Subparagraph (1)
-Publisher DOL-EBSA

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule III))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
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Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
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Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
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-Paragraph b
-Subparagraph (1)(i)(D)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule I))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph b
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-Publisher DOL-EBSA

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
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-Publisher DOL-EBSA

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph b
-Subparagraph (1)(i)(B)
-Publisher DOL-EBSA

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