Related Party Transactions (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2011 HOVENSA, net [Member]	Dec. 31, 2010 HOVENSA, net [Member]	Dec. 31, 2011 WilcoHess [Member]	Dec. 31, 2010 WilcoHess [Member]
Accounts receivable/(payable) with related parties
Accounts receivable/(payable) with related parties		$ (22)	$ (107)	$ 127	$ 110
Related Party Transactions (Textual) [Abstract]
The percentage of HOVENSA's production that will no longer be purchased by the Corporation following refinery closure in next fiscal year	50.00%