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Long-Term Debt (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 | May 03, 2024 | Apr. 30, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |  |  |  |  |
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] |  | Long-term debt, net |  |  | Long-term debt, net |
Finance Lease, Liability |  | $ 132 |  |  | $ 94 |
Debt Instrument, Unamortized Discount (Premium), Net |  | 16 |  |  | 0 |
Long-Term Debt and Lease Obligation, Including Current Maturities |  | 7,486 |  |  | 3,580 |
Debt Issuance Costs, Net |  | (37) |  |  | (25) |
Total long-term debt, net |  | 7,484 |  |  | 3,580 |
Long-term debt, net |  | 7,484 |  |  | 3,580 |
Current maturities of long-term debt |  | $ 2 |  |  | 0 |
Banking Regulation, Supplementary Leverage Ratio, Actual |  | 0.000408 |  |  |  |
Debt Instrument, Interest Rate During Period |  | 11.865% |  |  |  |
Nustar |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Senior notes |  |  | $ 2,570 |  |  |
Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term Line of Credit |  |  |  |  | 411 |
7.00% Senior Notes due 2028 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 7.000% senior notes due 2028 |  |  |  |
Senior notes |  | $ 500 |  |  | 500 |
5.750% Senior notes due 2025 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 5.750% senior notes due 2025 (1) (2) |  |  |  |
Senior notes | [1],[2] | $ 600 |  |  | 0 |
6.00% senior notes due 2026 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 6.000% senior notes due 2026 (1) |  |  |  |
Senior notes | [2] | $ 500 |  |  | 0 |
6.00% senior notes due 2027 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 6.000% senior notes due 2027 |  |  |  |
Senior notes |  | $ 600 |  |  | 600 |
5.625% senior notes 2027 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 5.625% senior notes due 2027 (1) |  |  |  |
Senior notes | [2] | $ 550 |  |  | 0 |
5.875% Senior Notes due 2028 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 5.875% senior notes due 2028 |  |  |  |
Senior notes |  | $ 400 |  |  | 400 |
Stated interest rate |  | 5.875% |  |  |  |
4.50% senior notes due 2029 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 4.500% senior notes due 2029 |  |  |  |
Senior notes |  | $ 800 |  |  | 800 |
7.00% senior notes due 2029 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 7.000% senior notes due 2029 |  |  |  |
Senior notes |  | $ 750 |  |  | 0 |
4.50% senior notes due 2030 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 4.500% senior notes due 2030 |  |  |  |
Senior notes |  | $ 800 |  |  | 800 |
6.375% senior notes due 2030 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 6.375% senior notes due 2030 (1) |  |  |  |
Senior notes | [2] | $ 600 |  |  | 0 |
7.25% senior notes due 2032 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | 7.250% senior notes due 2032 |  |  |  |
Senior notes |  | $ 750 |  | $ 750 | $ 0 | [2]
Stated interest rate |  |  |  | 7.25% |  |
GoZone Bonds |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-Term Debt, Description |  | GoZone Bonds (1) (2) |  |  |  |
Senior notes | [2] | $ 322 |  |  |  |
Series 2008 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Senior notes |  | $ 56 |  |  |  |
Debt Instrument, Issuance Date |  | Jun. 26, 2008 |  |  |  |
Stated interest rate |  | 6.10% |  |  |  |
Debt Instrument, Maturity Date |  | Jun. 01, 2038 |  |  |  |
Series 2010 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Senior notes |  | $ 100 |  |  |  |
Debt Instrument, Issuance Date |  | Jul. 15, 2010 |  |  |  |
Stated interest rate |  | 6.35% |  |  |  |
Debt Instrument, Maturity Date |  | Jul. 01, 2040 |  |  |  |
Series 2010A |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Senior notes |  | $ 43 |  |  |  |
Debt Instrument, Issuance Date |  | Oct. 07, 2010 |  |  |  |
Stated interest rate |  | 6.35% |  |  |  |
Debt Instrument, Maturity Date |  | Oct. 01, 2040 |  |  |  |
Series 2010B |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Senior notes |  | $ 48 |  |  |  |
Debt Instrument, Issuance Date |  | Dec. 29, 2010 |  |  |  |
Stated interest rate |  | 6.10% |  |  |  |
Debt Instrument, Maturity Date |  | Dec. 01, 2040 |  |  |  |
Series 2011 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Senior notes |  | $ 75 |  |  |  |
Debt Instrument, Issuance Date |  | Aug. 09, 2011 |  |  |  |
Stated interest rate |  | 5.85% |  |  |  |
Debt Instrument, Maturity Date |  | Aug. 01, 2041 |  |  |  |
[1] | As of December 31, 2024, $600 million of senior notes and $75 million of GoZone Bonds due on or before December 31, 2025 were classified as long-term as management has the intent and ability to refinance the borrowings on a long-term basis.
[2] | These senior notes and bonds, totaling $2.57 billion aggregate principal amount, were assumed by the Partnership in connection with the closing of the NuStar acquisition in May 2024.

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