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Accounting for Stock-based Compensation - Additional Information (Details) $ / shares in Units, $ in Millions |  | 12 Months Ended | 24 Months Ended
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Apr. 04, 2018 shares | Dec. 31, 2021 USD ($) PerformancePeriod $ / shares shares | Dec. 31, 2020 USD ($) PerformancePeriod shares | Dec. 31, 2019 USD ($) PerformancePeriod shares | Dec. 31, 2018 shares | Dec. 31, 2015 PerformancePeriod | Dec. 31, 2020 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period |  | 3 years |  |  |  |  |
Share-based compensation arrangement by share-based payment award, options, vested and expected to vest, exercisable, weighted average remaining contractual term |  | 1 year 7 months 6 days |  |  |  |  |
Share-based compensation arrangement by share-based payment award, options, exercisable, weighted average remaining contractual term |  | 1 year 7 months 6 days |  |  |  |  |
Employee Stock Option |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, number of shares grants |  | 0 | 0 | 0 |  |  |
Share-based compensation arrangement by share-based payment award, options, outstanding, weighted average remaining contractual term |  | 10 years |  |  |  |  |
Share price | $ / shares |  | $ 102.55 |  |  |  |  |
Share-based compensation arrangement by share-based payment award, options, exercises in period, intrinsic value | $ |  | $ 0.8 | $ 5.1 | $ 4.9 |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share price | $ / shares |  | $ 102.55 |  |  |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value | $ |  | $ 7.9 | $ 14.1 | $ 7.2 |  |  |
Number of shares, granted |  | 132,757 | 170,411 | 159,831 |  |  |
Number of shares, vested |  | 119,203 | 258,307 | 164,913 |  |  |
Cash Settled RSUs |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share price | $ / shares |  | $ 102.55 |  |  |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value | $ |  | $ 8.7 | $ 9.3 | $ 7.2 |  |  |
Number of shares, granted |  | 52,246 | 134,259 | 103,606 |  |  |
Number of shares, vested |  | 104,272 | 154,653 | 123,395 |  |  |
Performance Shares |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share price | $ / shares |  | $ 102.55 |  |  |  |  |
Number of performance period in performance based share program | PerformancePeriod |  | 1 | 2 | 3 |  | 2 |
Percentage of multiplication award by product |  | 2.00% |  |  |  |  |
Number of shares, granted |  | 54,216 | 87,314 | 85,928 | 63,258 |  | 85,540
Number of shares, vested |  | 63,258 | 88,038 | 107,000 |  |  |
Number of shares, expected to vest |  | 85,540 |  |  |  |  |
Minimum |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected forfeiture rate |  | 0.00% |  |  |  |  |
Minimum | Employee Stock Option |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period |  | 3 years |  |  |  |  |
Minimum | Restricted Stock Units (RSUs) |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period |  | 3 years |  |  |  |  |
Minimum | Cash Settled RSUs |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period |  | 3 years |  |  |  |  |
Maximum |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected forfeiture rate |  | 19.61% |  |  |  |  |
Maximum | Employee Stock Option |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period |  | 4 years |  |  |  |  |
Maximum | Restricted Stock Units (RSUs) |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period |  | 4 years |  |  |  |  |
Maximum | Cash Settled RSUs |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period |  | 4 years |  |  |  |  |
Omnibus Plan |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, number of shares grants | 1,600,000 | 29,692 |  |  |  |  |
Share-based compensation arrangement by share-based payment award, number of additional awards |  | 0 |  |  |  |  |
Share-based compensation arrangement by share-based payment award, number of shares available for grant |  | 943,549 |  |  |  |  |
Share-based compensation arrangement by share-based payment award, options, outstanding, weighted average remaining contractual term |  | 10 years |  |  |  |  |
Omnibus Plan | Non-Employee Director Awards |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share price | $ / shares |  | $ 102.55 |  |  |  |  |
Number of shares, granted |  | 11,186 | 12,541 | 9,732 |  |  |
Number of shares, vested |  | 12,110 | 10,891 | 9,840 |  |  |

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