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, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 60	$ 68	$ 120	$ 139
Interest cost	293	271	585	544
Expected return on plan assets	(404)	(378)	(806)	(760)
Amortization of loss (gain)	150	239	299	480
Amortization of prior service cost (benefit)	0	3	1	6
Curtailment (gain) loss	4	0	4	1
Settlement loss	2	0	2	152
Net periodic benefit cost	105	203	205	562
Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	5	8	9	16
Interest cost	30	33	61	66
Amortization of loss (gain)	14	(2)	28	25
Amortization of prior service cost (benefit)	(53)	(46)	(106)	(94)
Curtailment (gain) loss	0	0	0	(154)
Settlement loss	0	0	0	1
Net periodic benefit cost	$ (4)	$ (7)	$ (8)	$ (140)