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Income Taxes - Additional Information (Detail) $ in Millions | 6 Months Ended
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Jun. 30, 2019 USD ($)
Income Tax Disclosure [Abstract] |
Effective change in income tax rate | 16.20%
Discrete benefit from change in tax status of subsidiary from partnership to corporation | $ 13.2

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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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