Other Accrued Liabilities (Schedule of Other Accrued Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Other Accrued Liabilities [Abstract]
Compensation and other employee-related costs	$ 1,189	$ 1,124
Deferred revenue	2,153	1,703
Employee benefits (Note 17)	423	443
Discounts and rebates	356	332
Derivative instruments	36	132
Miscellaneous	1,140	948
Total other accrued liabilities	$ 5,297	$ 4,682