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Real Estate Investments - Provisions for Impairment (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2025 USD ($) property | Sep. 30, 2024 USD ($) property | Sep. 30, 2025 USD ($) property | Sep. 30, 2024 USD ($) property
Real Estate Investments |  |  |  |
Number of properties impaired | property | 3 | 2 | 10 | 5
Provision for impairment | $ 2,980 | $ 2,694 | $ 10,272 | $ 7,224
Estimated fair value of impaired properties at time of impairment | $ 1,665 | $ 5,150 | $ 9,322 | $ 18,800

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- Definition The amount of fair value of the impaired real estate assets. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- 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

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- 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
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Balance Type: | debit
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- References No definition available. + Details
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