Long-Term Employee Benefits (Schedules of Net Periodic Benefit Cost) (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Pension Plans [Member]
Service cost	$ 62	$ 53	$ 182	$ 154
Interest cost	316	316	940	946
Expected return on plan assets	(371)	(360)	(1,105)	(1,076)
Amortization of unrecognized loss	153	126	459	379
Amortization of prior service cost (benefit)	4	4	12	12
Net periodic benefit cost	164	139	488	415
Other Long-Term Employee Benefit Plans Defined Benefit [Member]
Service cost	8	7	25	21
Interest cost	53	60	159	179
Amortization of unrecognized loss	15	15	45	44
Amortization of prior service cost (benefit)	(30)	(27)	(91)	(80)
Net periodic benefit cost	$ 46	$ 55	$ 138	$ 164