XML 83 R54.htm IDEA: XBRL DOCUMENT
v3.26.1

Supplemental Cash Flow Information (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2026
Supplemental Cash Flow Elements [Abstract] |
Summary of Supplemental Cash Flow Information |
| Three Months Ended March 31,
(Millions of dollars) | 2026 |  | 2025
Net cash provided by operating activities included: |  |  |
Interest paid (net of amounts capitalized) | $ | 505 |  |  | $ | 344 |
Net income taxes paid to taxing authorities(a) | 12 |  |  | 85 |
Non-cash investing and financing activities: |  |  |
Contribution of assets(b) | — |  |  | 115 |
(a) Includes $111 million in the three months ended March 31, 2025 paid to third parties for transferable tax credits. (b) Represents the book value of assets contributed by MPLX to a joint venture.
Reconciliation of Additions to Property, Plant and Equipment to Total Capital Expenditures | The consolidated statements of cash flows exclude changes to the consolidated balance sheets that did not affect cash. The following is a reconciliation of additions to property, plant and equipment to total capital expenditures:
| Three Months Ended March 31,
(Millions of dollars) | 2026 |  | 2025
Additions to property, plant and equipment per the consolidated statements of cash flows | $ | 913 |  |  | $ | 663 |
Increase (decrease) in capital accruals | 99 |  |  | (19) |
Total capital expenditures | $ | 1,012 |  |  | $ | 644 |

X
- Definition Schedule of Reconciliation of Additions to Property, Plant And Equipment to Total Capital Expenditures [Table Text Block] + References No definition available. + Details
Name: | mpc_ScheduleOfReconciliationOfAdditionsToPropertyPlantAndEquipmentToTotalCapitalExpendituresTableTextBlock
Namespace Prefix: | mpc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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