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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Income Tax Disclosure [Abstract] |  |
Effective change in income tax rate | 21.00% | 18.80%
Discrete benefit from change in tax status of subsidiary from partnership to corporation | $ 6.9 | $ 13.2

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- Definition Effective income tax percentage reconciliation change in reclassification from partnership to corporation. + References No definition available. + Details
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- Definition Effective income tax rate reconciliation change in reclassification from partnership to corporation. + References No definition available. + Details
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- References No definition available. + Details
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