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EQUITY (Tables) | 9 Months Ended
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Sep. 30, 2021
EQUITY |
Summary of repurchased shares of the company's common stock under the share repurchase program | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30,
​ |  | 2021 |  | 2020
Number of shares of common stock repurchased |  | ​ | — | ​ | ​ | 465,366
Average price paid per share |  | $ | — | ​ | $ | 89.92
Total purchase price (in millions) |  | $ | — | ​ | $ | 41.8

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