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Real Estate Investments - Provisions for Impairment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) property	Mar. 31, 2024 USD ($) property
Real Estate Investments
Provision for impairment	$ 4,331	$ 4,530
Number of Properties, Impairment of Real Estate | property	4	3
Impaired Real Estate Fair Value	$ 4,500	$ 13,700

X

- Definition

The amount of fair value of the impaired real estate assets.

+ References

No definition available.

+ Details

Name:	adc_ImpairedRealEstateEstateFairValue
Namespace Prefix:	adc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The number of properties relating to the impairment of real estate value.

+ References

No definition available.

+ Details

Name:	adc_NumberOfPropertiesImpairmentOfRealEstate
Namespace Prefix:	adc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-2

+ Details

Name:	us-gaap_ImpairmentOfRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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