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Significant Events - Additional Information (Details) - Oak Street [Member] $ in Billions	6 Months Ended
	Jun. 30, 2021 USD ($)
Real Estate Properties [Line Items]
Real Estate Funding	$ 1.0
Date Of Real Estate Funding Agreement	May 03, 2021

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- Definition

Date Of Real Estate Funding Agreement

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Real Estate Funding

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No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- 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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- Details

Name:	us-gaap_RealEstatePropertiesAxis=arko_OakStreetMember
Namespace Prefix:
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Balance Type:
Period Type: