The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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Summary of Significant Accounting Policies Narrative (Details) (USD $) In Millions, unless otherwise specified					12 Months Ended			8 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Restricted cash [Member]	Dec. 31, 2011 Restricted cash [Member]	Dec. 31, 2012 Automotive Segment [Member]	Dec. 31, 2011 Automotive Segment [Member]	Dec. 31, 2010 Automotive Segment [Member]	Dec. 31, 2012 Energy Segment [Member]	Dec. 31, 2012 Nitrogen Fertilizer [Member] Energy Segment [Member]	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Maximum [Member] Refineries [Member] Energy Segment [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Minimum [Member] Refineries [Member] Energy Segment [Member]
Schedule of Significant Accounting Policies [Line Items]
Cash held at consolidated affiliated partnerships and restricted cash	$ 1,419	$ 4,979	$ 700	$ 4,800	$ 0	$ 0		$ 0
Debt	8,548	6,473			2,805	2,798		926
Fair value of long-term debt	8,600	6,500
Planned major maintenance								107
Planned major maintenance, frequency (in years)									2 years		5 years		4 years
Special profits interest allocations percentage										2.50%		1.50%
Incentive allocation percentage										25.00%		15.00%
Research and development expense					$ 179	$ 172	$ 156