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Income Tax - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Netherlands statutory income taxes rate			25.00%	25.00%	25.00%
Effect of the tax benefits on basic earnings per share			$ 0.13	$ 0.05	$ 0.05
Maximum percentage of tax reduction from tax holidays			100.00%	100.00%	100.00%
Income tax holiday expiration date			Dec. 31, 2022
Legal inflationary index				0.13%
Deferred tax benefit (expense) recorded as component of other comprehensive income (loss)			$ (1)	$ (1)
Cumulative amount of distributable earnings	$ 1,893	$ 1,046	1,893	1,046
Unrecognized tax benefits	235	195	235	195
Accrued interest and penalties related to uncertain tax positions		1		$ 1	$ 1	$ 27
Interest and penalties of unrecognized tax benefits	10	$ 9
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Accrued interest and penalties related to uncertain tax positions	$ 1		$ 1
Earliest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Open tax year			1997
Latest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Open tax year			2017

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Legal inflationary index.

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Maximum Percentage of Tax reduction from Tax holidays.

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Unrecognized Tax Benefits Against Existing Net Operating Losses

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Per share amount effect of the income tax benefit resulting from the income tax holidays granted by taxing jurisdictions.

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

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A segregation of retained earnings which is available for dividend distribution. Earnings not paid out as dividends but instead reinvested in the core business or used to pay off debt. Unappropriated profit is part of shareholder equity. Also called cumulative distributions or earned surplus or accumulated earnings or unappropriated profit.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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