Shares Used to Calculate Earnings per Share | | | | | | | | | | | | | | Three Months
Ended September 30, | | Nine Months
Ended September 30, | (In millions) | 2018 | | 2017 | | 2018 | | 2017 | | | | | | | | | Weighted-average shares: | | | | | | | | Basic(a) | 51.1 |
| | 50.7 |
| | 51.0 |
| | 50.7 |
| Effect of dilutive stock awards and options | 0.9 |
| | 1.2 |
| | — |
| | 0.9 |
| Diluted | 52.0 |
| | 51.9 |
| | 51.0 |
| | 51.6 |
| | | | | | | | | Antidilutive stock awards and options excluded from denominator | — |
| | — |
| | 1.6 |
| | 0.1 |
|
| | (a) | We have deferred compensation plans for directors and certain of our employees. For participants electing to defer compensation into common stock units, amounts owed to participants will be paid out in shares of Brink's common stock. Each unit represents one share of common stock. The number of shares used to calculate basic earnings per share includes the weighted-average units credited to employees and directors under the deferred compensation plans. Accordingly, included in basic shares are 0.3 million in the three months and 0.3 million in the nine months ended September 30, 2018, and 0.3 million in the three months and 0.3 million in the nine months ended September 30, 2017. |
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