Other Accrued Liabilities (Schedule of Other Accrued Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accrued Liabilities, Current [Abstract]
Compensation and other employee-related costs	$ 1,045	$ 1,092
Deferred revenue	2,839	2,706
Employee benefits (Note 18)	335	367
Discounts and rebates	328	318
Derivative instruments	105	131
Miscellaneous	1,567	1,383
Total other accrued liabilities	$ 6,219	$ 5,997