Pensions and Other Post-Retirement Benefits - Component of Accumulated Other Comprehensive Income/(Loss) Expected to be Recognized (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Net actuarial loss	$ (17)
The Netherlands
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Net actuarial loss	(7)
United States
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Net actuarial loss	(5)
Other
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Net actuarial loss	$ (5)