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Acquisitions, Divestitures and Other Transactions (Details) customer in Thousands, € in Millions, $ in Millions, gal in Billions				1 Months Ended	3 Months Ended					9 Months Ended
	Apr. 01, 2026 USD ($) site	Jan. 16, 2026 USD ($)	Jan. 16, 2026 EUR (€)	Oct. 30, 2026 USD ($) store customer gal	Sep. 30, 2026 USD ($)	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Jan. 16, 2026 EUR (€)	Dec. 31, 2025 USD ($)
Asset Acquisition [Line Items]
Units issued in acquisition								$ 13	$ 5
Operating lease right-of-use assets, net					$ 1,541					$ 1,541			$ 1,449
Goodwill					3,123					3,123			$ 3,026
Common Unitholders
Asset Acquisition [Line Items]
Units issued in acquisition								$ 13	$ 5
TanQuid
Asset Acquisition [Line Items]
Business Combination, Consideration Transferred		$ 194
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent		346										€ 298
Business Combination, Recognized Asset Acquired, Asset, Current		65
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment		639
Operating lease right-of-use assets, net		59
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent		1
Business Combination, Recognized Asset Acquired, Asset		764
Business Combination, Recognized Liability Assumed, Liability, Current		9
Business Combination, Recognized Liability Assumed, Lease Obligation		66
Business Combination, Recognized Liability Assumed, Deferred Tax Liability		62
Business Combination, Recognized Liability Assumed, Liability, Noncurrent		42
Business Combination, Recognized Liability Assumed, Liability		525
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill		239
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent		45
Payments to Acquire Businesses, Gross		239	€ 206
TanQuid \| Fair Value of debt assumed
Asset Acquisition [Line Items]
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent		$ 346
TanQuid \| GERMANY
Asset Acquisition [Line Items]
Number of fuel terminals		15	15
TanQuid \| POLAND
Asset Acquisition [Line Items]
Number of fuel terminals		one	one
Other Acquisitions
Asset Acquisition [Line Items]
Payments to Acquire Businesses, Gross					$ 15	$ 22	$ 50
Payments to Acquire Businesses, Net of Cash Acquired										87	$ 189
Delta Acquisition
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment	$ 36
Payments to Acquire Businesses, Net of Cash Acquired	81									$ 75	$ 0
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	15
Goodwill	$ 24
Delta Acquisition \| Caribbean [Member]
Asset Acquisition [Line Items]
Number of Countries in which Entity Operates \| site	5
Offen Acquisition \| Subsequent Event [Member]
Asset Acquisition [Line Items]
Number of Gallons of Fuel Delivered Annually by Acquiree \| gal				2.5
Number of Customers Served by Acquiree \| customer				7
Number of Retail Stores Served by Acquiree \| store				800
Offen Acquisition \| Subsequent Event [Member] \| Forecast
Asset Acquisition [Line Items]
Business Combination, Consideration Transferred				$ 600