Employee Benefit Plan - Defined Benefit and Postretirement Benefit Plans (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Change in Plan Assets
Fair value of plan assets at end of year	$ 217	$ 190
Unfunded status	57
Domestic Pension Benefits [Member]
Change in Benefit Obligation
Benefit obligation at beginning of year	20	19
Service cost
Interest cost	1	1	1
Actuarial loss	3	1
Effect of foreign exchange rates
Plan participant contributions
Benefits paid	(1)	(1)
Other
Benefit obligation at end of year	23	20	19
Change in Plan Assets
Fair value of plan assets at beginning of year
Actual return on plan assets, net of expenses
Employer contribution	1	1
Plan participant contributions
Effect of foreign exchange rates
Benefits paid	(1)	(1)
Fair value of plan assets at end of year
Unfunded status	(23)	(20)
Accumulated benefit obligation	23	20
Plans with Accumulated Benefit Obligations in excess of Plan Assets
Projected benefit obligation	23	20
Accumulated benefit obligation	23	20
Fair value of plan assets
Foreign Pension Benefits [Member]
Change in Benefit Obligation
Benefit obligation at beginning of year	206	183
Service cost
Interest cost	10	10	10
Actuarial loss	19	18
Effect of foreign exchange rates	4	(1)
Plan participant contributions
Benefits paid	(7)	(5)
Other		1
Benefit obligation at end of year	232	206	183
Change in Plan Assets
Fair value of plan assets at beginning of year	190	176
Actual return on plan assets, net of expenses	19	12
Employer contribution	11	8
Plan participant contributions
Effect of foreign exchange rates	4	(1)
Benefits paid	(7)	(5)
Fair value of plan assets at end of year	217	190	176
Unfunded status	(14)	(16)
Accumulated benefit obligation	229	205
Plans with Accumulated Benefit Obligations in excess of Plan Assets
Projected benefit obligation	158	140
Accumulated benefit obligation	157	140
Fair value of plan assets	121	105
Postretirement Benefits [Member]
Change in Benefit Obligation
Benefit obligation at beginning of year	20	20
Service cost
Interest cost	1	1	1
Actuarial loss		1
Effect of foreign exchange rates
Plan participant contributions	1	1
Benefits paid	(2)	(3)
Other
Benefit obligation at end of year	20	20	20
Change in Plan Assets
Fair value of plan assets at beginning of year		1
Actual return on plan assets, net of expenses
Employer contribution	1	1
Plan participant contributions	1	1
Effect of foreign exchange rates
Benefits paid	(2)	(3)
Fair value of plan assets at end of year			1
Unfunded status	$ (20)	$ (20)