XML 82 R41.htm IDEA: XBRL DOCUMENT
v3.25.4

Equity (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Equity [Abstract] |
Schedule of Stockholders Equity [Table Text Block] | The changes in the number of common units during the years ended December 31, 2023, 2024 and 2025 are summarized below:
(In units) | Common Units |  |  |  |  |  |  |  |
Balance at December 31, 2022 | 1,001,020,616 |  |  |  |  |  |  |  |  |
Unit-based compensation awards | 196,428 |  |  |  |  |  |  |  |  |
Conversion of Series A preferred units | 2,281,831 |  |  |  |  |  |  |  |  |
Balance at December 31, 2023 | 1,003,498,875 |  |  |  |  |  |  |  |  |
Unit-based compensation awards | 141,985 |  |  |  |  |  |  |  |  |
Conversion of Series A preferred units(1) | 21,078,998 |  |  |  |  |  |  |  |  |
Units redeemed in unit repurchase program | (7,577,568) |  |  |  |  |  |  |  |  |
Balance at December 31, 2024 | 1,017,142,290 |  |  |  |  |  |  |  |  |
Unit-based compensation awards | 147,670 |  |  |  |  |  |  |  |  |
Conversion of Series A preferred units(1) | 6,166,965 |  |  |  |  |  |  |  |  |
Units redeemed in unit repurchase program | (7,754,885) |  |  |  |  |  |  |  |  |
Balance at December 31, 2025 | 1,015,702,040 |  |  |  |  |  |  |  |  |
(1) Certain Series A preferred unitholders have exercised their rights to convert their Series A preferred units into common units as discussed in Note 9.
Class of Treasury Stock [Table Text Block] | Total unit repurchases were as follows for the years ended December 31, 2025, 2024 and 2023:
(In millions, except per unit data) | 2025 |  | 2024 |  | 2023 |  |
Number of common units repurchased | 8 |  |  | 8 |  |  | — |  |  |
Cash paid for common units repurchased(1) | $ | 400 |  |  | $ | 326 |  |  | $ | — |  |  |
Average cost per unit(1) | $ | 51.58 |  |  | $ | 43.04 |  |  | $ | — |  |  |
(1)Cash paid for common units repurchased and average cost per unit includes commissions paid to brokers during the period.
Dividends Declared | Total distributions declared for the years ended December 31, 2025, 2024 and 2023 are summarized in the table below.
| 2025 |  | 2024 |  | 2023
Distributions per common unit | $ | 4.066 |  |  | $ | 3.613 |  |  | $ | 3.250 |
Distributions Made to Limited Partner, by Distribution [Table Text Block] | The allocation of total quarterly cash distributions to common and preferred unitholders is as follows for the years ended December 31, 2025, 2024 and 2023. The Sixth Amended and Restated Agreement of Limited Partnership, dated as of February 1, 2021 (“Partnership Agreement”) sets forth the calculation to be used to determine the amount and priority of cash distributions that the common unitholders and preferred unitholders will receive. MPLX’s distributions are declared for the prior quarter subsequent to the quarter end; therefore, the following table represents total cash distributions applicable to the period for which the distributions relate as opposed to the quarter in which they were declared and paid.
(In millions) | 2025 |  | 2024 |  | 2023
Common and preferred unit distributions: |  |  |  |  |
Common unitholders, includes common units of general partner | $ | 4,138 |  |  | $ | 3,678 |  |  | $ | 3,256 |
Series A preferred unit distributions | — |  |  | 27 |  |  | 94 |
Series B preferred unit distributions(1) | — |  |  | — |  |  | 5 |
Total cash distributions declared | $ | 4,138 |  |  | $ | 3,705 |  |  | $ | 3,355 |
(1) 2023 period includes the portion of the $21 million distribution paid to the Series B preferred unitholders on February 15, 2023 that was earned during the period prior to the redemption.

X
- Definition Tabular disclosure of payment of cash or stock made to limited partner of limited partnership (LP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_DistributionsMadeToLimitedPartnerByDistributionTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
Name: | us-gaap_DividendsDeclaredTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 + Details
Name: | us-gaap_ScheduleOfStockholdersEquityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481549/505-30-45-1 + Details
Name: | us-gaap_ScheduleOfTreasuryStockByClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration