Long-Term Employee Benefits (Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net loss	$ (13,042)	$ (12,477)
Prior service (cost) benefit	(62)	(99)
Pre-tax amounts recognized in accumulated other comprehensive income	(13,104)	(12,576)
Other Long-Term Employee Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net loss	(1,233)	(1,266)
Prior service (cost) benefit	1,567	862
Pre-tax amounts recognized in accumulated other comprehensive income	$ 334	$ (404)