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v3.26.1

Segment Reporting - Schedule of Reconciliation of Operating Income from Reportable Segments to Consolidated Loss Before Income Taxes (Parenthetical) (Details) - $ / Gallons | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2026 | Dec. 31, 2025
Segment Reporting [Abstract] |  |
Fixed margin | 6 | 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