Sale of Stock, Availability Period

No definition available.

Name:	aci_SaleOfStockAvailabilityPeriod
Namespace Prefix:	aci_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Base rate for management and service fees under arrangement to manage operations, including, but not limited to, investment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

+ Details

Name:	us-gaap_ManagementAndServiceFeesBaseRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
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SUBSEQUENT EVENTS - Capital Raises (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Nov. 06, 2026	Oct. 31, 2026	Sep. 30, 2026	Aug. 31, 2026	Jul. 31, 2026	Jun. 30, 2026	May 31, 2026	Apr. 30, 2026	Mar. 31, 2026	Feb. 28, 2026	Jan. 31, 2026	Sep. 30, 2025	Aug. 31, 2025	Jul. 31, 2025	Jun. 30, 2025	May 31, 2025	Apr. 30, 2025	Mar. 31, 2025	Feb. 28, 2025	Jan. 31, 2025
Class I
Subsequent Event [Line Items]
Price per share (in usd per share)			$ 24.7489	$ 24.7808	$ 24.7711	$ 24.8841	$ 24.9295	$ 24.8805	$ 24.9176	$ 24.9252	$ 25.0263	$ 24.9088	$ 24.8316	$ 24.8587	$ 24.9490	$ 24.9464	$ 24.8195	$ 24.9275	$ 24.9241	$ 25.0625
Class D
Subsequent Event [Line Items]
Price per share (in usd per share)			24.7489	24.7808	24.7711	24.8841	24.9295	24.8805	24.9176	24.9252	25.0263
Class S
Subsequent Event [Line Items]
Price per share (in usd per share)			24.7489	24.7808	24.7711	24.8841	24.9295	$ 24.8805	$ 24.9176	$ 24.9252	$ 25.0263
Class N
Subsequent Event [Line Items]
Price per share (in usd per share)			$ 24.7489	$ 24.7808	$ 24.7711	$ 24.8841	$ 24.9295
Subsequent Event
Subsequent Event [Line Items]
Shares purchased (in shares)		31,066,687
Consideration received on transaction	$ 642.4	$ 768.9
Availability period	20 days
Subsequent Event \| Class I
Subsequent Event [Line Items]
Shares purchased (in shares)		17,890,593
Price per share (in usd per share)		$ 24.7489
Subsequent Event \| Class D
Subsequent Event [Line Items]
Shares purchased (in shares)		1,222,277
Base rate	2.00%
Subsequent Event \| Class S
Subsequent Event [Line Items]
Shares purchased (in shares)		1,137,779
Base rate	3.50%
Subsequent Event \| Class N
Subsequent Event [Line Items]
Shares purchased (in shares)		10,816,038
Base rate	2.00%