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Warranties - Warranty Expense by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Provisions	$ 8,905	$ 4,670	$ 15,715	$ 11,388
AAON Oklahoma
Segment Reporting Information [Line Items]
Provisions	6,224	3,336	11,101	9,332
AAON Coil Products
Segment Reporting Information [Line Items]
Provisions	2,144	803	3,004	1,323
BasX
Segment Reporting Information [Line Items]
Provisions	$ 537	$ 531	$ 1,610	$ 733

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- Definition

Amount of increase in the standard product warranty accrual from warranties issued. Excludes extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-8

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