Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Sales Revenue From Wholesale Fuel Sales To Affiliates	$ 24	$ 28	$ 42
Bulk Fuel Purchases From Affiliates	1,249	1,463	1,661
Reimbursement from Limited Partnership Investment	43	35	$ 34
Related Party
Related Party Transaction [Line Items]
Accounts payable	331	199
Other Liabilities	$ 78	$ 82