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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Schedule Of Income Tax [Line Items] |  |  |  |
Valuation Allowance | $ 129,000,000 |  |  |
Deferred tax assets, Noncurrent | 4,000,000 | $ 2,000,000 |  |
Deferred income taxes | 11,000,000 | 10,000,000 |  |
Deferred tax assets, Current |  | 22,000,000 |  |
Deferred tax liabilities, Current |  | 0 |  |
Unrecognized tax benefits | 1,000,000 | 0 |  | $ 2,000,000
Unrecognized tax benefits increase associated with uncertain income tax positions | 1,000,000 |  |  |
Unrecognized tax benefits, income tax penalties and interest expense | 0 |  |  |
Unrecognized tax benefits, income tax penalties and interest accrued | 0 |  |  |
Foreign tax credit carryforwards | 3,000,000 | 0 |  |
Valuation allowance | 3,000,000 |  |  |
Undistributed earnings | 180,000,000 |  |  |
Provision for U.S. federal income tax | (14,000,000) | 38,000,000 | $ 48,000,000 |
Provision for state income tax | (1,000,000) | 4,000,000 | $ 4,000,000 |
Foreign Subsidiaries [Member] |  |  |  |
Schedule Of Income Tax [Line Items] |  |  |  |
Provision for U.S. federal income tax | 0 |  |  |
Provision for state income tax | 0 |  |  |
Domestic Country [Member] |  |  |  |
Schedule Of Income Tax [Line Items] |  |  |  |
Valuation Allowance | 11,000,000 |  |  |
Operating loss carryforwards | 30,000,000 | 0 |  |
Deferred tax benefit | $ 11,000,000 |  |  |
Operating loss carryforwards expiration year | 2035 |  |  |
Foreign Country [Member] |  |  |  |
Schedule Of Income Tax [Line Items] |  |  |  |
Operating loss carryforwards | $ 7,000,000 | $ 4,000,000 |  |
Operating Loss Carryforwards without expiration date | 5,000,000 |  |  |
Operating Loss Carryforwards with expiration date | $ 2,000,000 |  |  |
Foreign Country [Member] | Maximum [Member] |  |  |  |
Schedule Of Income Tax [Line Items] |  |  |  |
Operating loss carryforwards expiration year | 2025 |  |  |

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