Long-Term Employee Benefits (Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net loss	$ (12,477)	$ (9,032)
Prior service (cost) benefit	(99)	(114)
Pre-tax amounts recognized in accumulated other comprehensive income	(12,576)	(9,146)
Other Long-Term Employee Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net loss	(1,266)	(889)
Prior service (cost) benefit	862	994
Pre-tax amounts recognized in accumulated other comprehensive income	$ (404)	$ 105