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Supplemental Cash Flow Information (Tables)
 3 Months Ended
Mar. 31, 2025
Supplemental Cash Flow Elements [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures
 Three Months Ended 
March 31,
(In millions)20252024
Net cash provided by operating activities included:
Interest paid (net of amounts capitalized)$277 $278 
Cash paid for amounts included in the measurement of lease liabilities:
Payments on operating leases17 19 
Non-cash investing and financing activities:
Net transfers of property, plant and equipment to lease receivable44 25 
Contribution of assets(1)
115 — 
ROU assets obtained in exchange for new operating lease obligations19 34 
ROU assets obtained in exchange for new finance lease obligations$3 $— 
(1)    Represents the book value of assets contributed by MPLX to a joint venture.
Summary of 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 do not affect cash. The following is a reconciliation of additions to property, plant and equipment to total capital expenditures:
 Three Months Ended 
March 31,
(In millions)20252024
Additions to property, plant and equipment$267 $255 
Increase/(Decrease) in capital accruals1 (45)
Total capital expenditures$268 $210