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v3.21.1

Income Taxes (Tables) | 3 Months Ended
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Mar. 31, 2021
Income Taxes |
Schedule of provision for income taxes and effective tax rate | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended | ​
​ | March 31, | ​
​ | 2021 | ​ | 2020 | ​
Provision for income taxes | $ | (104.1) | ​ | $ | (46.0) | ​
Effective tax rate |  | 23.9 | % |  | 15.9 | %

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