MPLX LP is a diversified master limited partnership (MLP) that owns and operates midstream energy infrastructure and logistics assets and provides fuels distribution services. The Company’s segments include Logistics and Storage (L&S) and Gathering and Processing (G&P) segments. Its L&S segment primarily engages in transportation, storage, distribution and marketing of crude oil, asphalt and refined petroleum products. The L&S segment also includes the operation of its inland marine business, terminals, rail facilities, storage caverns and refining logistics. The G&P segment primarily engages in gathering, processing and transportation of natural gas as well as the gathering, transportation, fractionation, storage and marketing of NGLs.