Pensions and Other Postemployment Benefits - Net Periodic Benefit Cost (Credit) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Pension Benefits [Member] | United States Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 1	$ 1	$ 2
Interest cost	12	12	24	24
Expected return on plan assets	(12)	(14)	(24)	(29)
Amortization of actuarial losses	3	2	6	5
Amortization of prior service credits	0	0	0	0
Net periodic benefit cost (credit)	3	1	7	2
Pension Benefits [Member] | Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4	7	8
Interest cost	3	2	6	4
Expected return on plan assets	0	(1)	0	(1)
Amortization of actuarial losses	1	3	2	6
Amortization of prior service credits	0	0	0	0
Net periodic benefit cost (credit)	8	8	15	17
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	3	4	6	7
Expected return on plan assets	0	0	0	0
Amortization of actuarial losses	0	0	1	2
Amortization of prior service credits	(1)	(1)	(2)	(2)
Net periodic benefit cost (credit)	$ 2	$ 3	$ 5	$ 7