Plains GP Holdings, L.P., through Plains All American Pipeline, L.P. (PAA), owns and operates midstream energy infrastructure and provides logistics services for crude oil. Its segments include Crude Oil and Natural Gas Liquids (NGL). Its Crude Oil segment operations generally consist of gathering and transporting crude oil using pipelines (including gathering systems), trucks and, at times, on barges or railcars, in addition to providing terminalling, storage and other related services utilizing its integrated assets across the United States and Canada. Its assets provide services to third parties as well as to its merchant activities. Its merchant activities include the purchase of crude oil supply and the movement of this supply on its assets or third-party assets to sales locations, including its terminals, third-party connecting carriers, regional hubs or refineries. Its NGL segment operations involve NGL storage and terminalling from its NGL assets located in the United States.