Leases - Schedule of Future Minimum Rental Revenues and Payments for Operating and Capital Leases (Parenthetical) (Details) $ in Millions	Sep. 30, 2023 USD ($)
Leases [Abstract]
Minimum rental payments of interest related to operating lease	$ 9.2
Minimum rental payments of interest related to finance lease	$ 131.4

Future minimum rental payments of interest related to operating lease.

No definition available.

Name:	akr_FutureMinimumRentalPaymentsOfInterestRelatedToOperatingLease
Namespace Prefix:	akr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant