General - Additional Information (Details) $ / shares in Units, $ in Millions			9 Months Ended
	Mar. 05, 2026 shares	Feb. 13, 2026 USD ($) $ / shares shares	Sep. 30, 2026 States Segments Sites Dealer $ / shares shares	Aug. 04, 2026 FuelTerminal DealerLocation	Dec. 31, 2025 $ / shares
General [Line Items]
Number of sites operated by external operators (dealers) | Sites			2,124
Number of cardlock sites | Sites			294
Number of states | States			30
Common stock par value			$ 0.0001		$ 0.0001
Description of voting rights			representing 73.6% of the economic interests in the Company and 93.3% of the combined voting power of the Class A common stock and Class B common stock.
Number of leased dealer locations | Dealer			566
Purchase Agreement with U.S. Petroleum Partners, LLC [Member]
General [Line Items]
Number of dealer locations acquired | DealerLocation				400
Number of fuel terminals acquired | FuelTerminal				2
Wholesale
General [Line Items]
Number of reportable segments | Segments			3
Fleet Fueling
General [Line Items]
Number of reportable segments | Segments			3
GPMP
General [Line Items]
Number of reportable segments | Segments			3
ARKO Petroleum Corp [Member]
General [Line Items]
Number of sites operated by parent | Sites			1,016
Class A common stock
General [Line Items]
Common stock par value			$ 0.0001		0.0001
Class A common stock | ARKO Petroleum Corp [Member] | Over-Allotment Option [Member]
General [Line Items]
Underwriters option shares | shares	1,459,112	1,666,666
Class A common stock | ARKO Petroleum Corp [Member] | Initial Public Offering [Member]
General [Line Items]
Common stock par value		$ 0.0001
Issuance of common stock | shares		11,111,111
Sale of stock issue price per share		$ 18
Net proceeds received on the transaction | $		$ 206.8
Underwriting discounts and commissions and offering costs | $		15.8
offering costs | $		$ 3.7
Class B common stock
General [Line Items]
Common stock par value			0.0001		$ 0.0001
Class B common stock | ARKO Petroleum Corp [Member]
General [Line Items]
Common stock par value			$ 0.0001
Issuance of common stock | shares			35,000,000
Owned equity rights			73.60%
Common Stock A and B [Member] | ARKO Petroleum Corp [Member] | Over-Allotment Option [Member]
General [Line Items]
Ownership percentage economic interests			93.30%