Basis and Summary of Significant Accounting Policies - Supplemental Disclosure of Noncash Investing Transactions (Details) $ in Millions	9 Months Ended
Sep. 30, 2018 USD ($)
Accounting Policies [Abstract]
Asset acquisition, fair value of non-cash consideration	$ 0.6
Asset acquisition, non-cash settlement of accounts receivable	$ 0.4

Asset Acquisition, Non-Cash Settlement Of Accounts Receivable

No definition available.

Name:	aan_AssetAcquisitionNonCashSettlementOfAccountsReceivable
Namespace Prefix:	aan_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration