Williams Companies is an energy company, providing infrastructure that delivers natural gas products to fuel the clean energy economy. Co.'s segments are: Transmission & Gulf of Mexico, which includes Co.'s subsidiary, Transcontinental Gas Pipe Line Company, LLC, an interstate natural gas pipeline that extends from the Gulf of Mexico to the eastern seaboard; Northeast G&P, which is comprised of Co.'s midstream gathering, processing, and fractionation businesses; West, which is comprised of Co.'s gas gathering, processing, and treating operations in the Rocky Mountain region; and Gas and NGL Marketing Services, which includes Co.'s NGL and natural gas marketing and trading operations.