Acquisitions and Investments Acquisitions and Investments (Pending Acquisition of Hess Retail Holdings LLC) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended				3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014 Speedway Store	Jun. 30, 2014 Hess Retail	Sep. 30, 2014 Hess Retail Scenario, Forecast BPD	Sep. 30, 2014 Hess Retail Scenario, Forecast Speedway Store
Business Acquisition [Line Items]
Date of acquisition agreement					May 21, 2014
Allocation of space on Colonial Pipeline (in barrels per day)						40,000
Total consideration transferred						$ 2,874
Cash paid for acquisition	42	1,515				2,370
Consideration transferred, working capital						230
Consideration transferred, capital leases	$ 0	$ 6	[1]			$ 274
Number of states in which entity operates				9			23
Reason for business combination						This acquisition will significantly expand our Speedway presence from nine to 23 states throughout the East Coast and Southeast and is aligned with our strategy to grow higher-valued, stable cash flow businesses. This acquisition will also enable us to further leverage our integrated refining and transportation operations, providing an outlet for an incremental 200,000 barrels per day of assured sales from our refining system.

[1] Acquisition-date fair value of non-cash consideration associated with the Galveston Bay Refinery and Related Assets acquisition.