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Income Taxes - Additional information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Taxes |  |  |  |  |  |  |  |
Tax Cuts and Jobs Act, change in tax rate, income tax expense (benefit) |  | $ (126,000,000) |  |  |  | $ 6,000,000 |  |
Tax expense, issuance of new US Treasury regulations |  |  | $ 8,000,000 |  |  | 1,000,000 |  |
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings, provisional liability | $ 1,000,000 | (145,000,000) |  |  |  | 1,000,000 | $ (145,000,000) |
Cumulative foreign earnings |  | 1,300,000,000 |  |  |  |  |  |
Tax Cuts and Jobs Act of 2017, deferred tax asset, existing income tax expense (benefit) |  | 19,000,000 |  |  |  |  |  |
Impairment of goodwill and acquired intangibles | 0 |  |  |  | $ 57,000,000 |  |  |
Income tax (benefit) expense |  |  |  |  |  | (3,000,000) | 125,000,000 | $ 96,000,000
Effective income tax rate reconciliation, excess tax expense |  |  | 5,000,000 |  |  |  |  |
Net operating loss and tax credit carryforwards | 63,000,000 |  |  |  |  | 63,000,000 |  |
Valuation allowance | 38,000,000 |  |  |  |  | 38,000,000 |  |
Tax liability related to uncertain tax positions | 34,000,000 | 28,000,000 | $ 30,000,000 |  |  | 34,000,000 | 28,000,000 | $ 30,000,000
Uncertain tax positions recognized as current liability on balance sheet | 34,000,000 |  |  |  |  | 34,000,000 |  |
Uncertain tax positions | 17,000,000 | $ 14,000,000 |  |  |  | 17,000,000 | $ 14,000,000 |
Uncertain tax positions related to business acquisitions not recognized on balance sheet | 17,000,000 |  |  |  |  | 17,000,000 |  |
Interest accruals related to uncertain tax liabilities | 2,000,000 |  |  |  |  | 2,000,000 |  |
United States And Certain Foreign Jurisdictions |  |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |  |
Net operating loss carryforwards in the United States and certain foreign jurisdictions | 11,000,000 |  |  |  |  | 11,000,000 |  |
Domestic Tax Authority |  |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |  |
Net operating loss carryforwards in the United States and certain foreign jurisdictions | 1,000,000 |  |  |  |  | 1,000,000 |  |
Research Tax Credit Carryforward |  |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |  |
Research and development tax credit carryforwards | $ 51,000,000 |  |  |  |  | $ 51,000,000 |  |
Marketing Applications |  |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |  |
Income tax (benefit) expense |  |  |  | $ 22,000,000 |  |  |  |

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