Stock-Based Compensation and Other Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions |
1 Months Ended | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|---|
May 31, 2024 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Stock-Based Compensation and Other Employee Benefit Plans [Line Items] | |||||
| Stock-based compensation plans, number of shares available for future grant (in shares) | 4,435,000 | 4,435,000 | |||
| Non-cash stock-based compensation expense | $ 7.3 | $ 7.2 | $ 24.0 | $ 24.3 | |
| Stock-based compensation, income tax benefits | $ 1.2 | $ 1.1 | 4.2 | 12.9 | |
| Stock-based compensation, vested awards, net income tax (shortfall) benefit | $ (0.1) | $ 8.8 | |||
| 2013 Incentive Plan | |||||
| Stock-Based Compensation and Other Employee Benefit Plans [Line Items] | |||||
| Share-based compensation, number of additional shares authorized | 1,200,000 | ||||
| 2011 Incentive Plan | |||||
| Stock-Based Compensation and Other Employee Benefit Plans [Line Items] | |||||
| Share-based compensation, number of additional shares authorized | 1,000,000 | ||||
| X | ||||||||||
- Definition Amount of net tax benefit (deficiency) from vesting of share-based payment awards. No definition available.
|
| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of additional shares authorized for issuance under share-based payment arrangement. No definition available.
|
| X | ||||||||||
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|