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v3.25.3

Deferred royalty obligation - Schedule of Royalty Obligation (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Deferred Royalty Obligation [Roll Forward] |  |
Beginning balance | $ 326,659 | $ 309,613
Less: royalty payments | 4,816 | 5,384
Plus: interest expense | 26,164 | 33,608
Less: cumulative catch-up adjustment, Other, net | 517 | 11,178
Ending balance | $ 347,490 | $ 326,659

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- Definition Deferred Royalty Obligation + References No definition available. + Details
Name: | adc_DeferredRoyaltyObligation
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Deferred Royalty Obligation + References No definition available. + Details
Name: | adc_DeferredRoyaltyObligationRollForward
Namespace Prefix: | adc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Increase (Decrease) To Royalty Obligation, Cumulative Catch-Up Adjustment, Other, Net + References No definition available. + Details
Name: | adc_IncreaseDecreaseToRoyaltyObligationCumulativeCatchUpAdjustmentOtherNet
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Increase (Decrease) To Royalty Obligation, Interest Expense + References No definition available. + Details
Name: | adc_IncreaseDecreaseToRoyaltyObligationInterestExpense
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Increase (Decrease) To Royalty Obligation, Royalty Payments + References No definition available. + Details
Name: | adc_IncreaseDecreaseToRoyaltyObligationRoyaltyPayments
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration