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Organization	3 Months Ended
Organization	Mar. 31, 2013
Organization and Operations [Abstract]
Organization	Note 1 — Organization Targa Resources Corp. ("TRC") is a Delaware corporation formed in October 2005. Our common stock is listed on the NYSE under the symbol "TRGP." In this Quarterly Report, unless the context requires otherwise, references to "we," "us," "our," "the Company" or "Targa" are intended to mean our consolidated business and operations, including our wholly owned subsidiary TRI Resources Inc. ("TRI").