Income Tax Expense (Deferred Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Deferred Income Tax Liabilities, Net	$ 1,139	$ 157
Valuation Allowance [Line Items]
Deferred Income Tax Liabilities, Net	1,139	157
Net of deferred income tax receivable
Income Tax Disclosure [Abstract]
Other	45	18
Total deferred income tax assets	278	34
Deferred Tax Assets, Valuation Allowance	(62)	0
Deferred Income Tax Assets, Net	216	34
Property, plant and equipment	846	49
Trademarks and other intangibles	239	82
Investments in affiliates	54	53
Deferred Tax Liabilities, Other	38	1
Total deferred tax liabilities	1,177	185
Net operating losses, credits and other carryforwards	233	16
Increase (Decrease) in Deferred Liabilities	(55)	18
Deferred Income Tax Liabilities, Net	961	151	$ 166
Valuation Allowance [Line Items]
Net operating losses, credits and other carryforwards	233	16
Other	45	18
Deferred Tax Assets, Gross	278	34
Deferred Tax Assets, Valuation Allowance	62	0
Deferred Income Tax Assets, Net	216	34
Property, plant and equipment	846	49
Trademarks and other intangibles	239	82
Investments in affiliates	54	53
Deferred Tax Liabilities, Other	38	1
Deferred Tax Liabilities, Gross	1,177	185
Deferred Income Tax Liabilities, Net	961	151	$ 166
Increase (Decrease) in Deferred Liabilities	55	(18)
Net of deferred income tax receivable | Parkland Acquisition
Income Tax Disclosure [Abstract]
Increase (Decrease) in Deferred Liabilities	(755)	0
Valuation Allowance [Line Items]
Increase (Decrease) in Deferred Liabilities	755	0
Net of deferred income tax receivable | NuStar Acquisition
Income Tax Disclosure [Abstract]
Increase (Decrease) in Deferred Liabilities	0	(3)
Valuation Allowance [Line Items]
Increase (Decrease) in Deferred Liabilities	$ 0	$ 3