XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Income Taxes (Narrative) (Details) | 9 Months Ended
--- | ---
Sep. 30, 2017
Income Tax Disclosure [Abstract] |
Expected effective income tax rate for the year | 36.00%

X
- Definition Expected Effective Income Tax Rate, Continuing Operations + References No definition available. + Details
Name: | aaon_ExpectedEffectiveIncomeTaxRateContinuingOperations
Namespace Prefix: | aaon_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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