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EARNINGS PER SHARE CALCULATIONS. | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
EARNINGS PER SHARE CALCULATIONS | EARNINGS PER SHARE CALCULATIONS. The following table presents the reconciliation of net income attributable to T. Rowe Price Group to net income allocated to our common stockholders and the weighted-average shares that are used in calculating the basic and diluted earnings per share on our common stock. Weighted-average common shares outstanding assuming dilution reflect the potential dilution, determined using the treasury stock method, that could occur if outstanding stock options were exercised and non-participating stock awards vested.
(in millions) | 2020 |  | 2019 |  | 2018
Net income attributable to T. Rowe Price Group | $ | 2,372.7 |  |  | $ | 2,131.3 |  |  | $ | 1,837.5 |
Less: net income allocated to outstanding restricted stock and stock unit holders | 65.3 |  |  | 55.3 |  |  | 43.6 |
Net income allocated to common stockholders | $ | 2,307.4 |  |  | $ | 2,076.0 |  |  | $ | 1,793.9 |
Weighted-average common shares |  |  |  |  |
Outstanding | 228.8 |  |  | 235.4 |  |  | 242.2 |
Outstanding assuming dilution | 231.2 |  |  | 238.6 |  |  | 246.9 |
For the past three years, no stock options have been excluded from the calculation of diluted earnings per common share as none of the options' inclusion would be anti-dilutive.

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