The Williams Companies, Inc. is an energy company. Its segments include Transmission & Gulf of America, Northeast G&P, West, and Gas & NGL Marketing Services. The Transmission & Gulf of America segment comprises the Transco, NWP, and MountainWest interstate natural gas pipelines, and their related natural gas storage facilities, as well as natural gas gathering and processing and crude oil production handling and transportation assets in the Gulf Coast region. Northeast G&P comprises midstream gathering, processing, and fractionation businesses in the Marcellus Shale region. The West segment comprises gas gathering, processing, and treating operations in the Rocky Mountain region of Colorado and Wyoming, the Barnett Shale region of north-central Texas, and the Eagle Ford Shale region of south Texas, among others. The Gas & NGL Marketing Services segment includes natural gas liquids (NGL) and natural gas marketing and trading operations.