Financial risk management (Details) - Interest rate risk - Senior Secured Term Loan Facility $ in Thousands	Sep. 30, 2022 USD ($)
Disclosure of detailed information about financial instruments [line items]
Sensitivity analysis for types of interest rate risk, reasonably possible change in risk variable, increase on derivative values	$ 272
Sensitivity analysis for types of interest rate risk, reasonably possible change in risk variable, decrease on derivative values	$ 273

Sensitivity Analysis For Types Of Interest Rate Risk, Reasonably Possible Change In Risk Variable, Increase On Derivative Values

No definition available.

Name:	adc_SensitivityAnalysisForTypesOfInterestRateRiskReasonablyPossibleChangeInRiskVariableIncreaseOnDerivativeValues
Namespace Prefix:	adc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant