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Stock-Based Compensation - Narrative (Details) $ in Millions |  |  |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 09, 2021 shares | Jun. 24, 2020 | Mar. 16, 2020 USD ($) grantee | Mar. 20, 2019 USD ($) grantee | May 31, 2017 day | Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) | Jun. 04, 2021 shares | Mar. 21, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, number of shares available for grant (in shares) | shares |  |  |  |  |  |  |  |  | 4,500,000 | 1,235,669
Share-based compensation arrangement by share-based payment award, number of additional shares authorized (in shares) | shares | 776,777 |  |  |  |  |  |  |  |  |
Total stock-based compensation cost recognized |  |  |  |  |  | $ 74.8 | $ 63.9 | $ 45.6 |  |
Total unrecognized compensation cost |  |  |  |  |  | 5.5 |  |  |  |
Tax benefit from stock option and restricted stock units |  |  |  |  |  | 14.1 | 11.5 | 9.9 |  |
Vesting period |  | 1 year |  |  |  |  |  |  |  |
Total incremental compensation cost |  |  | $ 21.8 | $ 1.3 |  |  |  |  |  |
Shares exercised, total intrinsic value |  |  |  |  |  | 48.1 | 8.7 | 5.7 |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Total unrecognized compensation cost |  |  |  |  |  | $ 40.1 |  |  |  |
Compensation cost expected recognition weighted average period (in years) |  |  |  |  |  | 1 year 2 months 12 days |  |  |  |
Shares granted fair value |  |  |  |  |  | $ 44.5 | 37.0 | 34.0 |  |
Shares vested fair value |  |  |  |  |  | $ 24.4 | $ 11.9 | 7.6 |  |
Deferred stock units (in shares) | shares |  |  |  |  |  | 485,000 | 472,000 |  |  |
Restricted Stock Units (RSUs) | Non-Employee Directors |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  | 12 months |  |  |  |
Restricted Stock Units (RSUs) | Certain Employees |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  | 3 years |  |  |  |
Performance Based Restricted Stock Units |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Shares granted fair value |  |  |  |  |  | $ 34.9 | $ 58.5 | 19.0 |  |
Shares vested fair value |  |  |  |  |  | $ 23.7 | $ 21.7 | $ 9.3 |  |
Deferred stock units (in shares) | shares |  |  |  |  |  | 557,000 | 582,000 |  |  |
Performance Based Restricted Stock Units | Minimum |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Performance goals tracking period |  |  |  |  |  | 1 year |  |  |  |
Performance Based Restricted Stock Units | Maximum |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Performance goals tracking period |  |  |  |  |  | 3 years |  |  |  |
Stock Options, Non-CEO |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Number of grantees affected | grantee |  |  | 332 | 215 |  |  |  |  |  |
TSR |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Total unrecognized compensation cost |  |  |  |  |  | $ 52.8 |  |  |  |
Compensation cost expected recognition weighted average period (in years) |  |  |  |  |  | 1 year 8 months 12 days |  |  |  |
TSR | Minimum |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Performance goals tracking period |  |  |  |  |  | 1 year |  |  |  |
TSR | Maximum |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Performance goals tracking period |  |  |  |  |  | 3 years |  |  |  |
Performance Shares |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Expiration period |  |  |  |  | 10 years |  |  |  |  |
Number of consecutive trading days | day |  |  |  |  | 20 |  |  |  |  |
Award vesting rights |  |  |  |  |  | 100.00% |  |  |  |
Derived service period |  |  |  |  |  | 3 years |  |  |  |
Stock Option |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Total unrecognized compensation cost |  |  |  |  |  | $ 10.3 |  |  |  |
Vesting period |  |  |  |  |  | 3 years |  |  |  |
Compensation cost expected recognition weighted average period (in years) |  |  |  |  |  | 1 year 3 months 18 days |  |  |  |
Expiration period |  |  |  |  |  | 10 years |  |  |  |
Stock Option | First anniversary |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Award vesting rights |  |  |  |  |  | 33.00% |  |  |  |
Deferred Stock Units |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  | 200 days |  |  |  |
Deferred stock units (in shares) | shares |  |  |  |  |  | 58,000 | 54,000 |  |  |
Common Stock Issued |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, number of shares available for grant (in shares) | shares |  |  |  |  |  | 4,400,000 |  |  |  |

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