v3.26.1
Supplemental Cash Flow Information
 6 Months Ended
Jun. 30, 2026
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information
Six Months Ended 
June 30,
(Millions of dollars)20262025
Net cash provided by operating activities included:
Interest paid (net of amounts capitalized)$739 $590 
Net income taxes paid to taxing authorities(a)
630 119 
Non-cash investing and financing activities:
Contribution of assets(b)
— 115 
(a)    Includes $185 million and $111 million in the six months ended June 30, 2026 and June 30, 2025, respectively, paid to third parties and related parties for transferable tax credits. The six months ended June 30, 2026 includes $63 million paid to Martinez Renewables LLC.
(b)    Represents the book value of assets contributed by MPLX to a joint venture.
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:
Six Months Ended 
June 30,
(Millions of dollars)20262025
Additions to property, plant and equipment per the Consolidated Statements of Cash Flows$2,099 $1,358 
Increase (decrease) in capital accruals94 (5)
Total capital expenditures$2,193 $1,353