Long-Term Employee Benefits (Schedules of Net Periodic Benefit Cost) (Details) - Foreign Pension Plan [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 5	$ 10	$ 11
Interest cost	5	5	15	14
Expected return on plan assets	(16)	(21)	(49)	(61)
Amortization of actuarial net loss	9	1	20	8
Amortization of prior service cost (gain)	0	4	(1)	6
Curtailment gain	0	0	(2)	0
Net periodic benefit cost (income)	$ 1	$ (6)	$ (7)	$ (22)