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Goodwill and Intangibles (Tables) | 12 Months Ended
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Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The changes in carrying amount of goodwill were as follows for the periods presented:
(In millions) | Crude Oil and Products Logistics |  | Natural Gas and NGL Services |  | Total
Balance as of December 31, 2023 | $ | 7,645 |  |  | $ | — |  |  | $ | 7,645 |
Impairment losses | — |  |  | — |  |  | — |
Balance as of December 31, 2024 | 7,645 |  |  | — |  |  | 7,645 |
Acquisitions(1) | — |  |  | 1,110 |  |  | 1,110 |
Impairment losses | — |  |  | — |  |  | — |
Balance as of December 31, 2025 | 7,645 |  |  | 1,110 |  |  | 8,755 |
Gross goodwill as of December 31, 2025 | 7,645 |  |  | 4,251 |  |  | 11,896 |
Accumulated impairment losses | — |  |  | (3,141) |  |  | (3,141) |
Balance as of December 31, 2025 | $ | 7,645 |  |  | $ | 1,110 |  |  | $ | 8,755 |
(1) Acquisitions in 2025 are inclusive of the Northwind Midstream Acquisition and the BANGL Acquisition.
Schedule of Acquired Finite-Lived Intangible Assets by Major Class | MPLX’s intangible assets are comprised of customer contracts and relationships. Gross intangible assets with accumulated amortization as of December 31, 2025 and 2024 is shown below:
|  | December 31, 2025 |  | December 31, 2024
(In millions) |  | Gross |  | Accumulated Amortization(1) |  | Net |  | Gross |  | Accumulated Amortization(1) |  | Net
Crude Oil and Products Logistics |  | $ | 308 |  |  | $ | (260) |  |  | $ | 48 |  |  | $ | 283 |  |  | $ | (224) |  |  | $ | 59 |
Natural Gas and NGL Services |  | 2,175 |  |  | (826) |  |  | 1,349 |  |  | 1,363 |  |  | (904) |  |  | 459 |
|  | $ | 2,483 |  |  | $ | (1,086) |  |  | $ | 1,397 |  |  | $ | 1,646 |  |  | $ | (1,128) |  |  | $ | 518 |
(1) Amortization expense attributable to the Crude Oil and Products Logistics segment for the years ended December 31, 2025 and 2024 was $36 million and $35 million, respectively. Amortization expense attributable to the Natural Gas and NGL Services segment for the years ended December 31, 2025 and 2024 was $105 million and $99 million, respectively.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | Estimated future amortization expense related to the intangible assets at December 31, 2025 is as follows:
(In millions) |  |
2026 |  | $ | 164 |
2027 |  | 136 |
2028 |  | 125 |
2029 |  | 91 |
2030 |  | 91 |
2031 and thereafter |  | 790 |
Total |  | $ | 1,397 |

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 + Details
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