Inergy Holdings, L.P. engages in the ownership and management of the general partners of Inergy, L.P., a retail and wholesale propane supply, marketing, and distribution company in the United States. Inergy, L.P. also owns and operates a midstream operation, including a natural gas storage facility and natural gas liquids business. The company owns a 100% membership interest in Inergy GP, LLC, the managing general partner of Inergy and a 100% membership interest in Inergy Partners, LLC, the nonmanaging general partner of Inergy, which owns approximately 1.2% general partner interest in Inergy. Inergy Holdings GP, LLC serves as the company's general partner and manages its operations. The...