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Partners' Capital (Tables) | 12 Months Ended
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Dec. 31, 2025
Partners' Capital [Abstract] |
Schedule of Common Unit Activity | Common unit activity for the years ended December 31, 2025 and 2024 was as follows:
| Number of Units
Number of common units at December 31, 2023 | 84,408,014 |
Phantom unit vesting | 277,421 |
NuStar Acquisition | 51,543,100 |
Number of common units at December 31, 2024 | 136,228,535 |
Phantom unit vesting | 294,897 |
Units issued in acquisitions | 343,422 |
Number of common units at December 31, 2025 | 136,866,854 |
Schedule of Net Income Allocation By Partners | The calculation of net income allocated to common unitholders was as follows:
| Year Ended December 31,
| 2025 |  | 2024 |  | 2023
Attributable to Common Units |  |  |  |  |
Distributions declared | $ | 548 |  |  | $ | 478 |  |  | $ | 284 |
Distributions (in excess of) less than net income | (235) |  |  | 238 |  |  | 27 |
Common unitholders’ interest in net income | $ | 313 |  |  | $ | 716 |  |  | $ | 311 |
Schedule of Incentive Distribution Rights to Limited Partners | The percentage interests shown for Sunoco’s common unitholders and Sunoco’s IDR holder for the minimum quarterly distribution are also applicable to quarterly distribution amounts that are less than the minimum quarterly distribution. Energy Transfer currently owns Sunoco’s IDRs.
|  |  | Marginal percentage interest in distributions
| Total quarterly distribution per Common unit target amount |  | Common Unitholders |  | Holder of IDRs
Minimum Quarterly Distribution | $0.4375 |  | 100 | % |  | — |
First Target Distribution | Above $0.4375 up to $0.503125 |  | 100 | % |  | — |
Second Target Distribution | Above $0.503125 up to $0.546875 |  | 85 | % |  | 15 | %
Third Target Distribution | Above $0.546875 up to $0.656250 |  | 75 | % |  | 25 | %
Thereafter | Above $0.656250 |  | 50 | % |  | 50 | %
Distributions Made to Limited Partner, by Distribution | Cash distributions paid or to be paid with respect to Sunoco common units and Class D Units were as follows:
|  |  |  |  |  | Limited Partners |  |
Period Ended |  | Record Date |  | Payment Date |  | Per Unit Distribution |  | Distributions on Common Units |  | Distributions on Class D Units |  | Distribution to IDR Holders
December 31, 2022 |  | February 7, 2023 |  | February 21, 2023 |  | $ | 0.8255 |  |  | $ | 69 |  |  | $ | — |  |  | $ | 18 |
March 31, 2023 |  | May 8, 2023 |  | May 22, 2023 |  | 0.8420 |  |  | 71 |  |  | — |  |  | 19 |
June 30, 2023 |  | August 14, 2023 |  | August 21, 2023 |  | 0.8420 |  |  | 71 |  |  | — |  |  | 19 |
September 30, 2023 |  | October 30, 2023 |  | November 20, 2023 |  | 0.8420 |  |  | 71 |  |  | — |  |  | 19 |
December 31, 2023 |  | February 7, 2024 |  | February 20, 2024 |  | 0.8420 |  |  | 71 |  |  | — |  |  | 19 |
March 31, 2024 |  | May 13, 2024 |  | May 20, 2024 |  | 0.8756 |  |  | 119 |  |  | — |  |  | 36 |
June 30, 2024 |  | August 9, 2024 |  | August 19, 2024 |  | 0.8756 |  |  | 119 |  |  | — |  |  | 36 |
September 30, 2024 |  | November 8, 2024 |  | November 19, 2024 |  | 0.8756 |  |  | 119 |  |  | — |  |  | 36 |
December 31, 2024 |  | February 7, 2025 |  | February 19, 2025 |  | 0.8865 |  |  | 121 |  |  | — |  |  | 37 |
March 31, 2025 |  | May 9, 2025 |  | May 20, 2025 |  | 0.8976 |  |  | 122 |  |  | — |  |  | 39 |
June 30, 2025 |  | August 8, 2025 |  | August 19, 2025 |  | 0.9088 |  |  | 124 |  |  | — |  |  | 41 |
September 30, 2025 |  | October 30, 2025 |  | November 19, 2025 |  | 0.9202 |  |  | 126 |  |  | — |  |  | 42 |
December 31, 2025 |  | February 6, 2026 |  | February 19, 2026 |  | 0.9317 |  |  | 128 |  |  | 48 |  |  | 60 |
Schedule of Accumulated Other Comprehensive Income (Loss) | The following table presents the components of AOCI, net of tax:
| December 31, 2025 |  | December 31, 2024
Foreign currency translation adjustment | $ | (6) |  |  | $ | (1) |
Actuarial gains related to pensions and other postretirement benefits | — |  |  | 3 |
Total accumulated other comprehensive income included in partners’ capital, net of tax | $ | (6) |  |  | $ | 2 |

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