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Dividends and Distribution Payable (Details)	Sep. 09, 2020 $ / shares
Dividends and Distribution Payable
Cash dividends declared per common share (in dollars per share)	$ 0.60

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- References

No definition available.

+ Details

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Namespace Prefix:	adc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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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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Balance Type:	na
Period Type:	instant