Revolving feature end date 1.

No definition available.

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Namespace Prefix:	acva_
Data Type:	xbrli:dateItemType
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_
Data Type:	dtr-types:percentItemType
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

No definition available.

+ Details

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of interest rate for borrowing under credit facility. Includes, but is not limited to, terms and method for determining interest rate.

+ References

+ Details

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

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Borrowings - Additional Information (Details) - USD ($) $ in Millions			6 Months Ended
	Aug. 24, 2021	Jun. 25, 2021	Jun. 30, 2022
2019 Revolver [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Expiration Date			Jun. 25, 2024
Unused borrowing capacity			$ 49.5
Interest rate			4.87%
Revolving feature end date			Jun. 25, 2023
2021 Revolver [Member]
Debt Instrument [Line Items]
Maximum principal amount	$ 160.0
Line of Credit Facility, Expiration Date	Aug. 24, 2026		Aug. 24, 2026
Interest rate			6.50%
Commitment fee percentage	0.25%
Outstanding letter of credit issued			$ 1.1
Interest rate description			6.50
Letter Of Credit [Member]
Debt Instrument [Line Items]
Maximum principal amount	$ 20.0
LIBOR [Member] \| 2021 Revolver [Member]
Debt Instrument [Line Items]
Interest rate description	LIBOR (or a replacement rate established in accordance with the terms of the credit agreement) (subject to a 0.00% LIBOR floor), plus a margin of 2.75% per annum or
Base Rate [Member] \| 2021 Revolver [Member]
Debt Instrument [Line Items]
Interest rate description	the Alternative Base Rate plus a margin of 1.75% per annum
Alternative Base Rate Highest [Member] \| 2021 Revolver [Member]
Debt Instrument [Line Items]
Interest rate description	(a) the Wall Street Journal prime rate, (b) the NYRFB rate plus 0.5%, and (c)(i) 1.00% plus (ii) the adjusted LIBOR rate for a one-month interest period
First Amendment to Loan and Security Agreement [Member] \| 2019 Revolver [Member]
Debt Instrument [Line Items]
Maximum principal amount		$ 50.0
Line of Credit Facility, Expiration Date		Jun. 25, 2024
First Amendment to Loan and Security Agreement [Member] \| LIBOR [Member] \| 2019 Revolver [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		3.75%