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v3.25.1

SHARE-BASED COMPENSATION AND BENEFIT PLANS (Benefit Plans) (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Deferred Compensation Arrangements [Abstract] |  |
Benefit Plans, cost recognized | $ 14.0 | $ 13.9

X
- Definition Amount of expense for the employer contribution to the profit sharing and savings plan and nonqualified deferred compensation plan. + References No definition available. + Details
Name: | orly_BenefitPlansEmployerContribution
Namespace Prefix: | orly_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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