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Dividends and Distribution Payable (Details) - $ / shares	Apr. 25, 2019	Jun. 30, 2018
Agree Limited Partnership [Member]
Dividends Payable [Line Items]
Cash dividends declared per share (in dollars per share)	$ 0.57	$ 0.54

X

- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

+ Details

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Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=adc_AgreeLimitedPartnershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: