Pensions And Other Postemployment Benefits (Net Periodic Benefit Cost) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	$ 0	$ 0	$ (19)
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	16	12	12
Interest cost	10	16	14
Expected return on plan assets	(2)	(2)	(3)
Amortization of actuarial losses	11	5	8
Amortization of prior service credit	0	0	0
Settlement loss (gain)	0	1	1
Curtailment gain	(2)	0	0
Net periodic cost (credit)	$ 33	$ 32	$ 32
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.72%	1.77%	3.49%
Rate of compensation increase	3.19%	3.16%	3.17%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	1.77%	3.49%	2.99%
Expected return on plan assets	3.52%	4.18%	4.62%
Rate of compensation increase	3.16%	3.17%	3.13%
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 3	$ 4
Interest cost	48	52	47
Expected return on plan assets	(59)	(62)	(58)
Amortization of actuarial losses	10	4	14
Amortization of prior service credit	0	0	0
Settlement loss (gain)	0	(3)	0
Curtailment gain	0	0	0
Net periodic cost (credit)	$ 2	$ (6)	$ 7
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	4.15%	3.85%	4.55%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.85%	4.55%	3.70%
Expected return on plan assets	6.55%	6.95%	7.45%
Other Postemployment Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0
Interest cost	13	15	11
Expected return on plan assets	0	0	0
Amortization of actuarial losses	5	3	6
Amortization of prior service credit	(4)	(5)	(9)
Settlement loss (gain)	0	0	0
Curtailment gain	0	0	(19)
Net periodic cost (credit)	$ 14	$ 13	$ (11)
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	4.18%	3.84%	4.45%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.84%	4.45%	3.60%
U.S. Plans [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 3
Interest cost	48	52
Non-U.S. Plans [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	16	12
Interest cost	$ 10	$ 16