Components of Net Periodic Benefit Costs (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Settlement loss	$ 42	$ 42
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost		80	74	85
Expected return on plan assets		(111)	(117)	(111)
Service cost
Amortization of net actuarial (gain) loss		16	20	14
Settlement loss		36
Other		(5)
Net periodic benefit cost (credit)		16	(23)	(12)
Recognized in OCI:
Amount due to net actuarial (gains) losses		93	(88)	131
Prior service cost from plan amendments
Reclassification adjustment for net actuarial gains (losses) in net periodic benefit cost		(52)	(20)	(14)
Other		(2)
Total recognized in OCI		39	(108)	117
Net recognized in benefit cost and OCI		55	(131)	105
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost		11	11	12
Expected return on plan assets		(1)	(1)	(1)
Service cost		6	6	5
Amortization of net actuarial (gain) loss		3	4
Settlement loss		6
Other		(1)
Net periodic benefit cost (credit)		24	20	16
Recognized in OCI:
Amount due to net actuarial (gains) losses		53	(1)	51
Prior service cost from plan amendments				6
Reclassification adjustment for net actuarial gains (losses) in net periodic benefit cost		(9)	(4)
Venezuelan bolivar devaluation		(4)	(2)
Other		(1)
Total recognized in OCI		39	(7)	57
Net recognized in benefit cost and OCI		63	13	73
Foreign Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost		5	5	5
Service cost		1	1	1
Amortization of net actuarial (gain) loss		(1)
Net periodic benefit cost (credit)		5	6	6
Recognized in OCI:
Amount due to net actuarial (gains) losses		10	(12)	(8)
Reclassification adjustment for net actuarial gains (losses) in net periodic benefit cost		1
Total recognized in OCI		11	(12)	(8)
Net recognized in benefit cost and OCI		$ 16	$ (6)	$ (2)