Spectra Energy Partners is a partnership holding company. Through its subsidiaries and equity affiliates, Co. is engaged in the transmission, storage and gathering of natural gas, and the transportation and storage of crude oil, through interstate pipeline systems in the U.S. and Canada. Co.'s operations and activities are managed by its general partner, Spectra Energy Partners (DE) GP, LP. Co. manages its business in two reportable segments: U.S. Transmission, which provides transmission, storage, and gathering of natural gas in northeastern and southeastern U.S.; and Liquids, which provides transportation and storage of crude oil in central U.S. and Canada.