Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480070/505-10-S50-1

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-15

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-3

+ Details

Name:	us-gaap_DividendsPayableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate dividends declared during the period for each share of preferred stock outstanding.

+ References

+ Details

Name:	us-gaap_PreferredStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DividendsAxis=adc_O2025M1DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_SeriesAPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DividendsAxis=adc_O2025M2DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DividendsAxis=adc_O2025M3DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DividendsAxis=adc_O2026M1DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DividendsAxis=adc_O2026M2DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DividendsAxis=adc_O2026M3DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Dividends and Distributions Payable (Details) - $ / shares	3 Months Ended
	Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Mar. 31, 2025
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)	$ 0.801	$ 0.786	$ 0.768	$ 0.759
O 2025 M1 Dividends
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)			0.256
O 2025 M1 Dividends \| Series A Preferred Stock
Dividends Payable [Line Items]
Cash dividends declared per depositary share of Series A preferred stock			0.08854
O 2025 M2 Dividends
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)			0.256
O 2025 M2 Dividends \| Series A Preferred Stock
Dividends Payable [Line Items]
Cash dividends declared per depositary share of Series A preferred stock			0.08854
O 2025 M3 Dividends
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)			0.256
O 2025 M3 Dividends \| Series A Preferred Stock
Dividends Payable [Line Items]
Cash dividends declared per depositary share of Series A preferred stock			$ 0.08854
O 2026 M1 Dividends
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)	0.267
O 2026 M1 Dividends \| Series A Preferred Stock
Dividends Payable [Line Items]
Cash dividends declared per depositary share of Series A preferred stock	0.08854
O 2026 M2 Dividends
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)	0.267
O 2026 M2 Dividends \| Series A Preferred Stock
Dividends Payable [Line Items]
Cash dividends declared per depositary share of Series A preferred stock	0.08854
O 2026 M3 Dividends
Dividends Payable [Line Items]
Cash dividends declared per common share (in dollars per share)	0.267
O 2026 M3 Dividends \| Series A Preferred Stock
Dividends Payable [Line Items]
Cash dividends declared per depositary share of Series A preferred stock	$ 0.08854