v3.26.1
Derivative Financial Instruments (Tables)
 3 Months Ended
Mar. 31, 2026
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Instruments, Gain (Loss)
The impact of MPLX’s derivative contracts not designated as hedging instruments and the location of gains and losses recognized in the Consolidated Statements of Income is summarized below:
Three Months Ended 
March 31,
(In millions)20262025
Product sales
Realized loss$(1)$— 
Unrealized loss(7)— 
Product sales derivative loss(8)— 
Service revenue - product related
Realized loss(4)— 
Unrealized loss(44)— 
Service revenue - product related loss(48)— 
Purchased product costs
Realized loss(2)(3)
Unrealized loss(13)(4)
Purchased product cost derivative loss(15)(7)
Total derivative gain/(loss) included in Net income$(71)$(7)
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value
The following table presents the fair value of derivative instruments as of March 31, 2026 and December 31, 2025, and the line items in the Consolidated Balance Sheets in which the fair values are reflected. As of March 31, 2026 and December 31, 2025, there were no derivative assets or liabilities that were offset in the Consolidated Balance Sheets.
(In millions)March 31, 2026December 31, 2025
Commodity derivatives
Current liabilities - related parties$51 $— 
Other current liabilities(1)
11 6 
Other long-term liabilities(1)
43 35 
(1)    Includes embedded derivatives.