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Segment Reporting - Additional Information (Details) - $ / gal	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting [Abstract]
Fixed margin	5.0	4.5

X

- Definition

Fixed margin.

+ References

No definition available.

+ Details

Name:	arko_FixedMargin
Namespace Prefix:	arko_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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