Acquisitions (Unaudited) (Details) (USD $)	6 Months Ended		3 Months Ended				6 Months Ended
	Jun. 30, 2013 Plains Exploration & Production Company [Member]	Jun. 30, 2013 McMoRan Exploration Co [Member]	Mar. 31, 2013 Kokkola Cobalt Chemicals Refinery [Member]	Mar. 31, 2013 Senior Notes [Member]	Mar. 31, 2014 Senior Notes [Member]	Mar. 07, 2013 Senior Notes [Member]	Jun. 30, 2013 Bank Term Loan [Member]	Mar. 31, 2014 Bank Term Loan [Member]	Feb. 14, 2013 Bank Term Loan [Member]
Business Acquisition [Line Items]
Debt Instrument, Face Amount					$ 6,500,000,000	$ 6,500,000,000		$ 4,000,000,000	$ 4,000,000,000
Proceeds from Issuance of Long-term Debt				$ 6,400,000,000
Term of Debt Agreement							5 years
Business Acquisition, Effective Date of Acquisition	May 31, 2013	Jun. 03, 2013	Mar. 29, 2013