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Related Party Transactions - Summary of Sets Forth Major Related Parties and Their Relationships with Group (Details)	12 Months Ended
	Dec. 31, 2023
JD Group
Related Party Transaction [Line Items]
Relationships with the Group	A shareholder of the Group
Aileyou
Related Party Transaction [Line Items]
Relationships with the Group	A former investee of the Group
Gulin Group
Related Party Transaction [Line Items]
Relationships with the Group	An investee of the Group
Jinsong Group
Related Party Transaction [Line Items]
Relationships with the Group	An investee of the Group
AiFenLei Group
Related Party Transaction [Line Items]
Relationships with the Group	An investee of the Group
Yueqing
Related Party Transaction [Line Items]
Relationships with the Group	An investee of the Group
Yuejun
Related Party Transaction [Line Items]
Relationships with the Group	An investee of the Group

X

- Definition

Related party transaction description of relationship.

+ References

No definition available.

+ Details

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Namespace Prefix:	rere_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

+ Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

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- Details

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Namespace Prefix:
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X

- Details

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- Details

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- Details

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