Share-based Payments - Additional Information (Details) |
1 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Mar. 31, 2014 |
Dec. 31, 2019
USD ($)
shares
|
Dec. 31, 2018
USD ($)
shares
|
Dec. 31, 2017
USD ($)
shares
|
Dec. 31, 2015 |
|
| Disclosure Of Share Based Payments [Line Items] | |||||
| Weighted-average contractual life for stock options outstanding | 2 years 10 months 24 days | 2 years 10 months 24 days | 3 years 3 months 18 days | ||
| Weighted-average share price at exercise for options exercised | $ | $ 141.82 | $ 152.33 | $ 57.53 | ||
| weighted-average fair value of options granted | $ | $ 34.63 | $ 39.23 | $ 18.05 | ||
| Increase decrease in expected volatility rate | 10.00% | ||||
| Increase decrease in expected life | one year | ||||
| Employee Stock Option Plans ("ESOP") | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Description of share based payment | Under the Employee Stock Option Plans (“ESOP”), stock options of the Company are granted to executives and certain employees of the Group. For options granted prior to January 1, 2016, the exercise price is equal to the fair value of the shares on grant date for employees in the United States and for U.S. citizens and fair value less 30% for the rest of the world. The value of the discount is included in the grant date fair value of the award. For options granted thereafter under these ESOP plans, the exercise price of the options is equal to the fair value of the shares on grant date for all employees. Generally, the first vesting period (13.5% – 25% of the initial grant) is up to one year from the grant date and subsequently vests at a rate of 6.25% each quarter until fully vested. The exercise price for options is payable in the EUR value of a fixed USD amount; therefore, the Group considers these awards to be USD-denominated. The options are generally granted with a term of five years. During 2019, the Company implemented a new ESOP and Director Stock Option Plan, under which stock options of the Company are granted to executives and employees of the Group and to members of the Company’s Board of Directors, respectively. For options granted under the 2019 plans, the exercise price is equal to the fair value of the ordinary shares on grant date or equal to 150% of the fair value of the ordinary shares on grant date. The exercise price is included in the grant date fair value of the award. The options granted to participants under the 2019 programs have a first vesting period of three or eight months from date of grant and vest monthly or annually thereafter until fully vested. The options are granted with a term of five years. | ||||
| Description of share based payments award, options exercise price | the exercise price is equal to the fair value of the shares on grant date for employees in the United States and for U.S. citizens and fair value less 30% for the rest of the world. | ||||
| Options granted period | 5 years | ||||
| Employee Stock Option Plans ("ESOP") | 2019 Plans | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Options granted period | 5 years | ||||
| Percentage of fair value of ordinary shares | 150.00% | ||||
| Employee Stock Option Plans ("ESOP") | Vesting Tranche After First Vesting Period | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting percentage | 6.25% | ||||
| Employee Stock Option Plans ("ESOP") | Bottom of Range | 2019 Plans | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting period | 3 months | ||||
| Employee Stock Option Plans ("ESOP") | Bottom of Range | First Vesting Period | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting percentage | 13.50% | ||||
| Employee Stock Option Plans ("ESOP") | Top of Range | 2019 Plans | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting period | 8 months | ||||
| Employee Stock Option Plans ("ESOP") | Top of Range | First Vesting Period | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting percentage | 25.00% | ||||
| Restricted Stock Units | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Number of shares granted | 715,224 | 14,383 | 80,920 | ||
| Restricted Stock Units | 2019 Plans | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting period | 4 years | ||||
| Restricted Stock Units | Bottom of Range | 2019 Plans | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting period | 3 months | ||||
| Restricted Stock Units | Top of Range | 2019 Plans | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting period | 8 months | ||||
| Other Contingently Issuable Shares | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Number of shares granted | 162,320 | 0 | 0 | ||
| Other Contingently Issuable Shares | Anchor | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting period | 4 years | ||||
| Number of shares granted | 162,320 | ||||
| Grant date fair value of each equity instrument | $ | $ 145.21 | ||||
| Restricted Stock Awards | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Number of shares granted | 0 | 0 | 61,880 | ||
| Restricted Stock Awards | 2017 Acquiree | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Number of shares issued | 61,880 | ||||
| Restricted Stock Awards | Bottom of Range | 2017 Acquiree | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting period | 2 years | ||||
| Restricted Stock Awards | Top of Range | 2017 Acquiree | |||||
| Disclosure Of Share Based Payments [Line Items] | |||||
| Vesting period | 3 years | ||||