XML 66 R52.htm IDEA: XBRL DOCUMENT v3.25.1

Inventory and Vehicle Floorplan Payable (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Floorplan Payable [Line Items]
Vehicle floorplan facilities, amount outstanding	$ 3,558.9	$ 3,709.7
Used vehicle floorplan facilities, unused borrowing capacity	$ 278.3
New Vehicle Floorplan Facilities
Floorplan Payable [Line Items]
Vehicle floorplan facilities, weighted-average interest rate (percent)	6.00%	6.10%
Vehicle floorplan facilities, maximum borrowing capacity	$ 4,700.0
Vehicle floorplan facilities, amount outstanding	$ 3,000.0
Used Vehicle Floorplan Facilities
Floorplan Payable [Line Items]
Vehicle floorplan facilities, weighted-average interest rate (percent)	5.80%	5.80%
Vehicle floorplan facilities, maximum borrowing capacity	$ 809.8
Vehicle floorplan facilities, amount outstanding	531.5
Used vehicle floorplan facilities, remaining borrowing capacity	$ 0.1

X

- Definition

Floorplan Payable [Line Items]

+ References

No definition available.

+ Details

Name:	an_FloorplanPayableLineItems
Namespace Prefix:	an_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of borrowing capacity under used vehicle floorplan facilities considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of eligible used vehicle inventory that could have been pledged as collateral) and any amounts currently outstanding under the facility.

+ References

No definition available.

+ Details

Name:	an_UsedVehicleFloorplanFacilityRemainingBorrowingCapacity
Namespace Prefix:	an_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of borrowing capacity currently available under used vehicle floorplan facilities (maximum borrowing capacity less the amount of borrowings outstanding).

+ References

No definition available.

+ Details

Name:	an_UsedVehicleFloorplanFacilityUnusedBorrowingCapacity
Namespace Prefix:	an_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The average effective interest rate of vehicle floorplan facilities calculated at a point in time.

+ References

No definition available.

+ Details

Name:	an_VehicleFloorplanFacilityInterestRate
Namespace Prefix:	an_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The aggregate maximum borrowing capacity under new and used vehicle floorplan facilities without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facilities.

+ References

No definition available.

+ Details

Name:	an_VehicleFloorplanFacilityMaximumBorrowingCapacity
Namespace Prefix:	an_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amounts borrowed to finance the purchase of specific new vehicle inventories with the corresponding manufacturers' captive finance subsidiaries ("trade lenders") and specific new and, to a lesser extent, used vehicle inventories with non-trade lenders (lenders that are not captive finance subsidiaries of the manufacturer).

+ References

No definition available.

+ Details

Name:	an_VehicleFloorplanPayable
Namespace Prefix:	an_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	an_FloorplanFacilitiesNewVehicleUsedVehicleAxis=an_NewVehicleFloorplanFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	an_FloorplanFacilitiesNewVehicleUsedVehicleAxis=an_UsedVehicleFloorplanFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: