Income Taxes - Components of Income from Continuing Operations Before Income Taxes and Equity in Net Income(Loss) of Affiliates (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
UK (2016-2015), Dutch (2014)									$ (3)	$ 16	$ 17
Non-UK (2016-2015), Non-Dutch (2014)									819	945	604
Income from continuing operations before income taxes and equity in net loss of affiliates	$ 261	$ 214	$ 196	$ 145	$ 433	$ 225	$ 202	$ 101	$ 816	$ 961	$ 621