Long-Term Employee Benefits (Schedules of Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 66	$ 61	$ 134	$ 120
Interest cost	295	314	592	624
Expected return on plan assets	(379)	(369)	(760)	(734)
Amortization of unrecognized loss	220	153	439	306
Amortization of prior service cost (benefit)	3	4	7	8
Net periodic benefit cost	205	163	412	324
Other Long-Term Employee Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	10	9	19	17
Interest cost	48	53	96	106
Amortization of unrecognized loss	22	15	44	30
Amortization of prior service cost (benefit)	(30)	(31)	(60)	(61)
Net periodic benefit cost	$ 50	$ 46	$ 99	$ 92