Energy Transfer Partners, L.P. (ETP) is a limited partnership in the United States engaged in natural gas operations. ETP is managed by its general partner, Energy Transfer Partners GP, L.P. (General Partner or ETP GP), and ETP GP is managed by its general partner, Energy Transfer Partners, L.L.C. (ETP LLC), which is owned by Energy Transfer Equity, L.P., another publicly traded master limited partnership (ETE). The activities in which the Company is engaged all of which are in the United States and the wholly owned operating subsidiaries (collectively the Operating Companies). The Company's business segments are: intrastate transportation and storage; interstate transportation; midstream, and retail propane, NGL Transportation and Services Segment and other retail propane related operations. In October 2012, Summit Midstream Partners LP acquired ETC Canyon Pipeline, LLC. In April 2013, Energy Transfer Partners LP acquired the remaining 60% interest in ETP Holdco Corp.