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Dividends and Distributions Payable (Details) - $ / shares	Dec. 31, 2020	Dec. 01, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)	$ 2.405		$ 2.280	$ 2.155
Agree Limited Partnership [Member]
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)		$ 0.620

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- 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=121583591&loc=d3e4304-108586

+ Details

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- 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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- Details

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