Components of Net Periodic Benefit Costs (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Foreign Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost		$ 5	$ 7	$ 7
Service cost		1
Net periodic benefit cost (credit)		6	7	7
Recognized in OCI:
Amount due to net actuarial (gains) losses		(8)	7	(1)
Total recognized in OCI		(8)	7	(1)
Net recognized in benefit cost and OCI		(2)	14	6
United States Pension Plans of US Entity, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost		85	92	100
Expected return on plan assets		(111)	(104)	(99)
Amortization of net actuarial loss		14	20	19
Net periodic benefit cost (credit)		(12)	8	20
Recognized in OCI:
Amount due to net actuarial (gains) losses		131	66	29
Amortization of net actuarial losses in net periodic cost		(14)	(20)	(19)
Total recognized in OCI		117	46	10
Net recognized in benefit cost and OCI		105	54	30
Foreign Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost		12	13	17
Expected return on plan assets		(1)	(2)	(5)
Service cost		5	5	5
Settlement loss	5		5	2
Net periodic benefit cost (credit)		16	21	19
Recognized in OCI:
Amount due to net actuarial (gains) losses		51	(1)	3
Prior service cost from plan amendments		6
Amortization of net actuarial losses in net periodic cost			(5)	(2)
Total recognized in OCI		57	(6)	1
Net recognized in benefit cost and OCI		$ 73	$ 15	$ 20