Acquisitions and Investments Acquisitions and Investments (Tables)

6 Months Ended

Jun. 30, 2014

Business Combinations [Abstract]

Business Acquisition, Pro Forma Information [Table Text Block]

The following unaudited pro forma financial information presents consolidated results assuming the Galveston Bay Refinery and Related Assets acquisition occurred on January 1, 2012. The pro forma financial information does not give effect to potential synergies that could result from the acquisition and is not necessarily indicative of the results of future operations.

(In millions, except per share data)	Six Months Ended June 30, 2013
Sales and other operating revenues (including consumer excise taxes)	$	50,975
Net income attributable to MPC	1,373
Net income attributable to MPC per share - basic	$	4.21
Net income attributable to MPC per share - diluted	4.19