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Income Taxes - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective income tax rate (as percent) | 28.60% | 23.00% | 34.50% | 26.30% |
U.S. Federal statutory rate (as percent) | 21.00% |  | 21.00% |  |
Gross unrecognized tax benefits, including interest and penalties | $ 31.1 |  | $ 31.1 |  | $ 34.2

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