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Income Taxes - Net Deferred Tax Liabilities Presented on Consolidated Balance Sheet (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Income Tax Disclosure [Abstract] |  |
Long-term deferred tax assets | $ 372 | $ 308
Long-term deferred tax liabilities | (452) | (419)
Net deferred tax liabilities | $ (80) | $ (111)

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