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Business Combinations Business Combinations (Notes)
 9 Months Ended
Sep. 30, 2014
Business Combinations [Abstract]  
Business Combination Disclosure [Text Block]
Business Combinations

During 2013, we acquired certain refined petroleum products pipelines and terminals from Plains All American Pipeline, L.P. We have accounted for this acquisition as a business combination under the acquisition method of accounting in accordance with Accounting Standards Codification ("ASC") 805, Business Combinations. The acquisition was completed in two parts, as follows:

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New Mexico/Texas System. In July 2013, we acquired approximately 250 miles of common carrier pipeline that transports refined petroleum products from El Paso, Texas north to Albuquerque, New Mexico and transports products south to the United States–Mexico border for delivery within Mexico via a third-party pipeline for $57.0 million. We funded this acquisition with cash on hand.

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Rocky Mountain System. In November 2013, we acquired approximately 550 miles of common carrier pipeline that distributes refined petroleum products in Colorado, South Dakota and Wyoming for $135.0 million. The system includes four terminals with nearly 1.7 million barrels of storage. We funded this acquisition primarily with proceeds from our $300.0 million debt offering we completed in October 2013.

We completed our valuation process of this 2013 business combination during the second quarter of 2014, and there were no changes to our preliminary purchase price allocation amounts since December 31, 2013 (as reported in our 2013 annual report on Form 10-K).