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Accounts Receivable, Net (Details)	12 Months Ended
	Dec. 31, 2021
Accounts Receivable, Net [Abstract]
Accounts receivable balance from third party customers, description	the Company’s accounts receivable balance from third party customers as of December 31, 2021, approximately $0.4 million, or 30% has been collected as of the date of this report and the remaining balance is expected to be substantially collected from customers before December 31, 2022.

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

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