Contract Assets and Liabilities - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Revenue from Contract with Customer [Abstract]
Revenue recognized	$ 76.1	$ 5.9

Contract with Customer, Liability, Revenue Recognized Including Opening Balance

No definition available.

Name:	aaon_ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance
Namespace Prefix:	aaon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration