The calculation of basic and diluted earnings per ordinary share is as follows (dollars in millions, except per share data): | | | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | 2019 | | 2018 | | 2019 | | 2018 | Numerator: | |
| | |
| | |
| | |
| Net income attributable to controlling interests | $ | 28.0 |
| | $ | 2.1 |
| | $ | 80.7 |
| | $ | 59.4 |
| Less: Total income available to participating unvested securities(1) | — |
| | — |
| | (0.1 | ) | | (0.2 | ) | Total net income attributable to ordinary shares | $ | 28.0 |
| | $ | 2.1 |
| | $ | 80.6 |
| | $ | 59.2 |
| Denominator: | |
| | |
| | |
| | |
| Weighted-average ordinary shares outstanding—basic | 91,457,301 |
| | 108,445,541 |
| | 94,550,527 |
| | 108,918,328 |
| Potential ordinary shares: | | | | | | | | Restricted stock units | 38,332 |
| | 175,580 |
| | 118,948 |
| | 185,919 |
| Weighted-average ordinary shares outstanding—diluted | 91,495,633 |
| | 108,621,121 |
| | 94,669,475 |
| | 109,104,247 |
| Earnings per ordinary share attributable to controlling interests: | |
| | |
| | |
| | |
| Basic | $ | 0.31 |
| | $ | 0.02 |
| | $ | 0.85 |
| | $ | 0.54 |
| Diluted | $ | 0.31 |
| | $ | 0.02 |
| | $ | 0.85 |
| | $ | 0.54 |
|
(1) Income available to participating unvested securities includes dividends paid on unvested restricted shares and their proportionate share of undistributed earnings.
|