Commitments and Contingencies (Schedule of Reconciliation of the Changes in Product Warranty and Recall Reserves) (Details) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at January 1	$ 217	$ 189
Issuances/accruals during the period	172	246
Settlements made during the period	(186)	(182)
Other changes	(6)	0
Balance at June 30	197	253
Current portion	154	217
Non-current portion	43	36
Total	197	253
Product Warranty [Member]
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at January 1	202	187
Issuances/accruals during the period	172	168
Settlements made during the period	(181)	(168)
Other changes	3	0
Balance at June 30	196	187
Current portion	153	151
Non-current portion	43	36
Total	196	187
Product Recall [Member]
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at January 1	15	2
Issuances/accruals during the period	0	78
Settlements made during the period	(5)	(14)
Other changes	(9)	0
Balance at June 30	1	66
Current portion	1	66
Non-current portion	0	0
Total	$ 1	$ 66