v3.26.1
Master Limited Partnership (Noncontrolling Interest) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Equity transactions of MPLX $ (42) $ 83
Additional Paid-in Capital    
Increase (decrease) due to change in ownership (21) 39
Tax impact 7 (14)
Equity transactions of MPLX $ (14) $ 25