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Segment information (Details)	9 Months Ended
	Sep. 30, 2023 segment
Operating Segments [Abstract]
Number of business segments	1

X

- Definition

Number Of Business Segments

+ References

No definition available.

+ Details

Name:	adc_NumberOfBusinessSegments
Namespace Prefix:	adc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Operating Segments [Abstract]

+ References

No definition available.

+ Details

Name:	adc_OperatingSegmentsAbstract
Namespace Prefix:	adc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration