As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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-Name Emerging Issues Task Force (EITF)

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-Name Emerging Issues Task Force (EITF)

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 27

-Subparagraph c

-Appendix A

+ Details

Redeemable Noncontrolling Interest (Details) (USD $) In Millions, unless otherwise specified			6 Months Ended	36 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Auto Alliance International [Member]	Sep. 01, 2018 Auto Alliance International [Member]	Jun. 30, 2013 Auto Alliance International [Member] Mazda [Member]
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent			50.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners					50.00%
Redeemable Non Controlling Interest Exercise Price			$ 339
Business Acquisition Period Redeemable Noncontrolling Interest Exercised				3 years
Redeemable Noncontrolling Interest [Roll Forward]
Beginning balance	327	322	322
Accretion of redemption value of noncontrolling interest			5
Ending balance	$ 327	$ 322	$ 327