Other Contingencies and Commitments (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 Location	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2009
Guarantees
Guarantee for payments under terminal use agreements	$ 524,000,000
Term of guarantee for payments under terminal use agreement (in years)	14 years
Idemnifications
Indemnifications acquirer environmental liabilities, maximum obligation				200,000,000
Long-Term Unconditional Purchase Obligations and Commitments, Including Throughput and Take-or-Pay Agreements
Long term unconditional purchase obligations and commitments, including throughout and take or pay agreements in 2014	4,200,000,000
Long term unconditional purchase obligations and commitments, including throughout and take or pay agreements in 2015	4,500,000,000
Long term unconditional purchase obligations and commitments, including throughout and take or pay agreements in 2016	3,200,000,000
Long term unconditional purchase obligations and commitments, including throughout and take or pay agreements in 2017	2,600,000,000
Long term unconditional purchase obligations and commitments, including throughout and take or pay agreements in 2018	2,200,000,000
Long term unconditional purchase obligations and commitments, including throughout and take or pay agreements in 2019 and after	6,900,000,000
Total payments under long term unconditional purchase obligations and commitments including throughput and Take-or-Pay agreements	3,600,000,000	3,600,000,000	6,600,000,000
Environmental
Environmental reserve balance	1,456,000,000
Sites with potential remediation activities	174
Upstream [Member]
Environmental
Environmental reserve	313,000,000
U.S. Downstream [Member]
Environmental
Environmental reserve	834,000,000
International Downstream [Member]
Environmental
Environmental reserve	79,000,000
Other Businesses [Member]
Environmental
Environmental reserve	51,000,000
Sites with Potential Remediation Activities [Member]
Environmental
Environmental reserve	179,000,000
Environmental Reserve Less Environmental Reserve for Sites with Potential Remediation Activities [Member]
Environmental
Environmental reserve	1,277,000,000
Non U.S. Downstream [Member]
Environmental
Environmental reserve	$ 443,000,000