Debt - Senior Unsecured Revolving Credit Facility (Details) - USD ($) $ in Thousands			3 Months Ended
Aug. 08, 2024	Aug. 07, 2024	Mar. 31, 2025	Dec. 31, 2024
Unsecured revolving credit facility			$ 322,000	$ 158,000
Senior Unsecured Debt \| Revolving Credit Facility
Debt Instrument, Face Amount	$ 1,250,000	$ 1,000,000
Variable rate	0.10%	0.10%	0.10%
Investment, Variable Interest Rate, Type [Extensible Enumeration]	us-gaap:SecuredOvernightFinancingRateSofrMember	us-gaap:SecuredOvernightFinancingRateSofrMember	us-gaap:SecuredOvernightFinancingRateSofrMember
All-in Interest Rate			5.19%
SOFR rate			4.36%
Spread on variable rate		0.775%	0.725%
Investment, Variable Interest Rate, Type [Extensible Enumeration]	us-gaap:SecuredOvernightFinancingRateSofrMember	us-gaap:SecuredOvernightFinancingRateSofrMember	us-gaap:SecuredOvernightFinancingRateSofrMember
Unsecured revolving credit facility			$ 322,000
Debt Instrument, Accordion Option Additional Lender Commitments, Maximum			$ 2,000,000
Senior Unsecured Debt \| Revolving Credit Facility \| Minimum [Member]
Spread on variable rate	0.725%	0.725%
Senior Unsecured Debt \| Revolving Credit Facility \| Maximum [Member]
Spread on variable rate	1.40%	1.40%

Face (par) amount of debt instrument at time of issuance with accordion option maximum additional lender commitments.

No definition available.

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

- Definition

Effective SOFR interest rate used for the funds borrowed under the debt agreement.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Variable Rate Adjustment to Secured Overnight Financing Rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	adc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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- Definition

Indicates type of variable interest rate of investment.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Details

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