Commitments and Contingencies (Schedule of Product Warranty and Recall Reserves) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at January 1	$ 191	$ 217
Issuances/accruals during the period	233	248
Settlements made during the period	(241)	(256)
Other changes	0	(21)
Balance at September 30	183	188
Current portion	150	148
Non-current portion	33	40
Total	$ 183	$ 188

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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