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Shareholders' Equity, Noncontrolling Interests and Other Comprehensive Income - ATM Program - Additional Information (Details) - ATM Program - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Jun. 30, 2019 | Sep. 30, 2019
Class Of Stock [Line Items] |  |  |
Issuance of ordinary shares (in shares) | 2,149,154 |  | 4,816,505
Gross proceeds | $ 61.6 |  | $ 137.8
Weighted Average Share Price | $ 28.64 |  | $ 28.61
Proceeds from stock plans net of issuance costs | $ 60.6 |  | $ 135.8
Purchase new program included an optional forward purchase component |  | $ 250.0 |

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