Components of Net Periodic Benefit Costs (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended	12 Months Ended
	Dec. 31, 2010	Mar. 31, 2009	Jun. 30, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Termination cost						$ 2
United States Pension Plans of US Entity, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost				92	100	109
Expected return on plan assets				(104)	(99)	(116)
Amortization of net actuarial loss				20	19
Curtailment (gain) loss						1
Termination cost						2
Net periodic benefit cost (credit)				8	20	(4)
Recognized in OCI:
Amount due to net actuarial (gains) losses				66	29	285
Amortization of net actuarial losses in net periodic cost				(20)	(19)
Total recognized in OCI				46	10	285
Net recognized in benefit cost and OCI				54	30	281
Foreign Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost				13	17	19
Expected return on plan assets				(2)	(5)	(9)
Service cost				5	5	6
Curtailment (gain) loss						(1)
Settlement loss	2	1	5	5	2	1
Net periodic benefit cost (credit)				21	19	16
Recognized in OCI:
Amount due to net actuarial (gains) losses				(1)	3	27
Prior service cost from plan amendments						(1)
Amortization of net actuarial losses in net periodic cost				(5)	(2)
Total recognized in OCI				(6)	1	26
Net recognized in benefit cost and OCI				15	20	42
Foreign Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost				7	7	6
Service cost						1
Curtailment (gain) loss						(2)
Net periodic benefit cost (credit)				7	7	5
Recognized in OCI:
Amount due to net actuarial (gains) losses				7	(1)	9
Total recognized in OCI				7	(1)	9
Net recognized in benefit cost and OCI				$ 14	$ 6	$ 14