v3.24.3
Investments and Noncontrolling Interests (Tables)
 9 Months Ended
Sep. 30, 2024
Equity Method Investments and Joint Ventures [Abstract]  
Equity Method Investments
The following table presents MPLX’s equity method investments at the dates indicated:
Ownership as ofCarrying value at
September 30,September 30,December 31,
(In millions, except ownership percentages)VIE202420242023
L&S
BANGL, LLC(1)
45%$275 $63 
Illinois Extension Pipeline Company, L.L.C.35%231 228 
LOOP LLC41%313 314 
MarEn Bakken Company LLC(2)
25%530 449 
WPC Parent, LLC(3)
30%206 214 
Other(4)
X593 564 
Total L&S2,148 1,832 
G&P
MarkWest EMG Jefferson Dry Gas Gathering Company, L.L.CX67%335 336 
MarkWest Utica EMG, L.L.C.X59%717 676 
Ohio Gathering Company L.L.C.(5)
X35%488 — 
Sherwood Midstream LLCX50%492 500 
Other(4)
X378 399 
Total G&P2,410 1,911 
Total$4,558 $3,743 
(1)    In July 2024, we purchased an additional 20 percent ownership interest in BANGL, LLC, increasing our ownership interest to 45 percent, as discussed in Note 3.
(2)    The investment in MarEn Bakken Company LLC includes our 9.19 percent indirect interest in a joint venture (“Dakota Access”) that owns and operates the Dakota Access Pipeline and Energy Transfer Crude Oil Pipeline projects (collectively, the “Bakken Pipeline system”).    
(3)    Reflects the dilution of MPLX’s ownership interest in Whistler Pipeline, LLC and the formation of a new entity, WPC Parent, LLC, as discussed in Note 3. The carrying value at September 30, 2024 represents our ownership in WPC Parent, LLC, and the carrying value at December 31, 2023 represents our ownership interest in Whistler Pipeline, LLC.
(4)    Some investments included within Other have also been deemed to be VIEs.
(5)    We acquired a 36 percent direct interest in OGC in the Utica Midstream Acquisition discussed in Note 3. We also hold a 38 percent indirect interest in OGC through our ownership interest in MarkWest Utica EMG, L.L.C.