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EARNINGS PER SHARE CALCULATIONS. | 12 Months Ended
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Dec. 31, 2018
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) | 2018 |  | 2017 |  | 2016
Net income attributable to T. Rowe Price Group | $ | 1,837.5 |  |  | $ | 1,497.8 |  |  | $ | 1,215.0 |
Less: net income allocated to outstanding restricted stock and stock unit holders | 43.6 |  |  | 33.9 |  |  | 25.5 |
Net income allocated to common stockholders | $ | 1,793.9 |  |  | $ | 1,463.9 |  |  | $ | 1,189.5 |
Weighted-average common shares |  |  |  |  |
Outstanding | 242.2 |  |  | 241.2 |  |  | 245.5 |
Outstanding assuming dilution | 246.9 |  |  | 245.1 |  |  | 250.3 |
The following table shows the weighted-average outstanding stock options that are excluded from the calculation of diluted earnings per common share as the inclusion of such shares would be anti-dilutive.
(in millions) | 2018 |  | 2017 |  | 2016
Weighted-average outstanding stock options excluded | — |  |  | 5.0 |  |  | 9.9 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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