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Real Estate Investments - Assets Held for Sale (Details) $ in Thousands | Oct. 01, 2025 property | Sep. 30, 2025 USD ($) property | Dec. 31, 2024 property
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Real Estate Properties [Line Items] |  |  |
Number Of Real Estate Properties Held-For-Sale | property |  | 1 | 0
Land |  | $ 194 |
Building |  | 514 |
Accumulated depreciation |  | (2) |
Real estate held-for-sale, gross |  | 706 |
Total real estate held for sale, net |  | $ 706 |
Subsequent Events |  |  |
Real Estate Properties [Line Items] |  |  |
Change in number of real estate properties held-for-sale | property | 1 |  |

X
- Definition The increase (decrease) in number of real estate properties held-for-sale. + References No definition available. + Details
Name: | adc_ChangeInNumberOfRealEstatePropertiesHeldForSale
Namespace Prefix: | adc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Real Estate Properties Held-For-Sale. + References No definition available. + Details
Name: | adc_NumberOfRealEstatePropertiesHeldForSale
Namespace Prefix: | adc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cumulative amount of depreciation for real estate property held for sale. + References No definition available. + Details
Name: | adc_RealEstateHeldForSaleAccumulatedDepreciation
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Gross amount as of investments in buildings held for sale, excluding real estate considered to be inventory of the entity. + References No definition available. + Details
Name: | adc_RealEstateHeldForSaleBuilding
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of real estate held for sale excluding lease assets and liabilities, net of accumulated depreciation at the end of the reporting period. + References No definition available. + Details
Name: | adc_RealEstateHeldForSaleExcludingLeaseIntangibleAssetsAndLiabilitiesNet
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Gross amount as of investments in land held for sale, excluding real estate considered to be inventory of the entity. + References No definition available. + Details
Name: | adc_RealEstateHeldForSaleLand
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of real estate investments, net of accumulated depreciation . + References No definition available. + Details
Name: | adc_RealEstateHeldForSaleNetTotal
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
Name: | us-gaap_RealEstatePropertiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |