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Summary of Significant Accounting Policies - Real Estate Properties (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Summary of Significant Accounting Policies |  |
Land | $ 0 | $ 4,485
Lease intangibles - asset | 0 | 1,213
Real Estate Held-for-sale, gross | 0 | 5,698
Accumulated depreciation and amortization, net | 0 | (22)
Total Real Estate Held for Sale, net | $ 0 | $ 5,676

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 land, buildings and lease intangibles held for sale, excluding real estate considered to be inventory of the entity. + References No definition available. + Details
Name: | adc_RealEstateHeldForSaleGross
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 Gross amount as of investments in lease intangibles held for sale, excluding real estate considered to be inventory of the entity. + References No definition available. + Details
Name: | adc_RealEstateHeldForSaleLeaseIntangibles
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
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration