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Income Taxes - Additional Information (Detail) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Income Tax Disclosure [Abstract] |  |  |  |
Effective tax rate | 15.20% | 11.70% | 8.30% | 10.70%

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- Definition Effective tax rate continuing operations. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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