v3.25.4

INCOME TAXES (Provision for Income Taxes) (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes
Investment tax credit amount	$ 453,100	$ 376,400	$ 336,500
Liability for the purchase of transferrable federal renewable energy tax credits	17,600	346,600
Net operating loss, tax effected	14,172	5,831
Foreign Tax Jurisdiction
Income Taxes
Operating loss carryforwards	45,700	17,900
Net operating loss, tax effected	$ 14,200	$ 5,800

The noncurrent portion of the sum of the tax effects as of the balance sheet date of the amount of excesses of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion of all of the carryforward amount to realize the deferred tax asset.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Liability for the purchase of transferrable federal renewable energy tax credits

+ References

No definition available.

+ Details

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Namespace Prefix:	orly_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items of the Company's net operating loss carryforwards and tax credit carryforwards available to reduce future taxable income.

+ References

No definition available.

+ Details

Name:	orly_OperatingLossAndTaxCreditCarryforwardsLineItems
Namespace Prefix:	orly_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-3

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- Details

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Balance Type:
Period Type:

O REILLY AUTOMOTIVE INC 10-K