Reconciliations ofChanges in Benefit Obligations, Plan Assets and Funded Status (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Reconciliation of fair value of plan assets:
Fair value at end of period	$ 1,540	$ 1,576
United States Pension Plans of US Entity, Defined Benefit
Reconciliation of benefit obligation:
Obligation at beginning of period	1,866	1,831
Interest cost	92	100	109
Actuarial (gain) loss	114	94
Benefit payments	(141)	(159)
Obligation at end of period	1,931	1,866	1,831
Reconciliation of fair value of plan assets:
Fair value at beginning of period	1,456	1,401
Actual return on plan assets	152	164
Employer contributions	30	50
Benefit payments	(141)	(159)
Fair value at end of period	1,497	1,456	1,401
Funded status at end of period	(434)	(410)
Foreign Pension Plans, Defined Benefit
Reconciliation of benefit obligation:
Obligation at beginning of period	325	351
Interest cost	13	17	19
Service cost	5	5	6
Actuarial (gain) loss	(2)	7
Benefit payments	(17)	(17)
Settlements, curtailments and terminations	(77)	(33)
Translation adjustments	(4)	(5)
Obligation at end of period	243	325	351
Reconciliation of fair value of plan assets:
Fair value at beginning of period	120	136
Actual return on plan assets	1	9
Employer contributions	14	18
Benefit payments	(17)	(17)
Settlements	(77)	(33)
Translation adjustments	2	7
Fair value at end of period	43	120	136
Funded status at end of period	(200)	(205)
Foreign Postretirement Benefit Plans, Defined Benefit
Reconciliation of benefit obligation:
Obligation at beginning of period	132	124
Interest cost	7	7	6
Service cost			1
Actuarial (gain) loss	7	(1)
Benefit payments	(6)	(6)
Translation adjustments	(3)	8
Obligation at end of period	137	132	124
Reconciliation of fair value of plan assets:
Employer contributions	6	6
Benefit payments	(6)	(6)
Funded status at end of period	$ (137)	$ (132)