Additional current federal tax expense benefit except for act's one time translation tax.

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Additional current state and local tax expense benefit except for act's one time translation tax.

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Foreign tax credits expiration year.

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Income taxes provided for additional outside basis difference inherent in entities as result of reinvestment.

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Operating loss carryforwards expiration year.

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Schedule of income tax.

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Tax cuts and jobs act of 2017 change in tax rate income tax expense benefit.

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Tax cuts and jobs act of 2017 incomplete accounting deferred tax assets tax credit carryforwards foreign.

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Amount of deferred state, local, and federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to repatriation of foreign earnings.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized.

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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Amount of unrecognized tax benefits.

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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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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule Of Income Tax [Line Items]
U.S. federal corporate tax rate		35.00%
Charge relating to change in U.S. federal corporate tax rate		$ 69,000,000
Change in valuation allowance		(69,000,000)
Charge relating to one-time transition tax on unremitted foreign earnings		33,000,000
Unrecognized tax benefits		0	$ 1,000,000	$ 1,000,000
Unrecognized tax benefits, income tax penalties and interest expense		0
Unrecognized tax benefits, income tax penalties and interest accrued		0
Valuation Allowance		157,000,000	202,000,000	129,000,000
Valuation allowance		29,000,000
Foreign tax credit carryforwards		29,000,000	$ 5,000,000	$ 3,000,000
Foreign tax credit carryforwards, recognized as one-time transition tax due to Tax cuts and jobs act of 2017		23,000,000
Undistributed earnings		153,000,000
Income taxes provided for additional outside basis difference inherent in entities as result of reinvestment		0
Foreign Subsidiaries [Member]
Schedule Of Income Tax [Line Items]
Additional provision for U.S. federal income tax		0
Additional provision for state income tax		$ 0
Minimum [Member]
Schedule Of Income Tax [Line Items]
Foreign tax credits expiration year		2024
Maximum [Member]
Schedule Of Income Tax [Line Items]
Foreign tax credits expiration year		2027
Federal [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards		$ 188,000,000
Deferred tax benefit		39,000,000
Valuation Allowance		$ 39,000,000
Federal [Member] \| Minimum [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards expiration year		2035
Federal [Member] \| Maximum [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards expiration year		2036
State [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards		$ 143,000,000
Deferred tax benefit		8,000,000
Valuation allowance		$ 8,000,000
State [Member] \| Minimum [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards expiration year		2020
State [Member] \| Maximum [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards expiration year		2037
Foreign Country [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards		$ 20,000,000
Valuation allowance		5,000,000
Operating Loss Carryforwards without expiration date		13,000,000
Operating Loss Carryforwards with expiration date		$ 7,000,000
Foreign Country [Member] \| Minimum [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards expiration year		2020
Foreign Country [Member] \| Maximum [Member]
Schedule Of Income Tax [Line Items]
Operating loss carryforwards expiration year		2037
United States [Member]
Schedule Of Income Tax [Line Items]
Change in valuation allowance		$ 44,000,000
Canada (Member)
Schedule Of Income Tax [Line Items]
Change in valuation allowance		3,000,000
Other Foreign Jurisdictions [Member]
Schedule Of Income Tax [Line Items]
Change in valuation allowance		$ (2,000,000)
Scenario Forecast [Member]
Schedule Of Income Tax [Line Items]
U.S. federal corporate tax rate	21.00%