Property, Plant and Equipment - Summary of Property, Plant and Equipment (Footnote) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Internal-use software development cost, accumulated amortization	$ 56.9	$ 42.6

Capitalized Internal Use Software Accumulated Amortization

No definition available.

Name:	aan_CapitalizedInternalUseSoftwareAccumulatedAmortization
Namespace Prefix:	aan_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant