Organization (Details Textual)	Sep. 30, 2017
Nature of Operations [Line Items]
Ownership Percentage On Controlling Interest By Parent	98.80%

Controlling interest percentage held by Agree Realty Corporation (general partner).

No definition available.

Name:	adc_OwnershipPercentageOnControllingInterestByParent
Namespace Prefix:	adc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant