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Share-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended | 36 Months Ended |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2023 | May 19, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock available for awards, shares | 8,023,671 |  |  | 8,023,671 |
Common stock reserved for future awards, shares |  |  |  |  | 10,000,000
Stock-based employee compensation expense | $ 23.9 | $ 19.0 | $ 16.7 |  |
Related tax benefits | 7.7 | 3.6 | 4.0 |  |
Unrecognized compensation cost related to nonvested awards | $ 20.8 |  |  | $ 20.8 |
Weighted-average remaining requisite service period, years | 1 year 7 months 6 days |  |  |  |
RTSR Modifier | 25.00% |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 4.50% |  |  |  |
401(k) match, profit sharing and non-elective expense | $ 50.7 | 39.1 | $ 39.1 |  |
Excess Tax Expense - Share Based Compensation |  | $ 0.4 |  |  |
Share-Based Payment Arrangement, Exercise of Option, Tax Benefit | $ 2.9 |  |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares granted | 500,968 |  |  |  |
Shares nonvested | 1,066,916 | 798,515 |  | 1,066,916 |
Shares vesting period, (years) |  |  |  | 3 years |
Granted, Weighted Average Grant Date Fair Value | $ 27.38 |  |  |  |
Restricted Stock Units (RSUs) | Share-based Payment Arrangement, Nonemployee |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares nonvested | 67,611 |  |  | 67,611 |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number | 272,609 |  |  | 272,609 |
Performance Shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares granted | 649,088 | 566,086 | 973,885 |  |
Shares nonvested | 1,558,509 | 1,505,740 |  | 1,558,509 |
Shares vesting period, (years) |  |  |  | 3 years |
Granted, Weighted Average Grant Date Fair Value | $ 28.87 |  |  |  |
Performance Shares | NOEPS |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Fair value of shares granted | $ 13.3 |  | $ 6.5 |  |
Performance Shares | CVI |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Fair value of shares granted |  |  | $ 6.7 |  |
2019 Award | Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares granted |  |  | 285,755 |  |
Shares nonvested | 158,797 |  |  | 158,797 |
Share-based Compensation Arrangement by Share-based Payment Award, Grant Date Fair Value |  |  | $ 5.7 |  |
2020 award | Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares granted |  | 477,292 |  |  |
Shares nonvested | 385,062 |  |  | 385,062 |
Share-based Compensation Arrangement by Share-based Payment Award, Grant Date Fair Value |  | $ 12.5 |  |  |
2021 award | Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares granted | 500,968 |  |  |  |
Shares nonvested | 464,725 |  |  | 464,725 |
Share-based Compensation Arrangement by Share-based Payment Award, Grant Date Fair Value | $ 13.7 |  |  |  |
2021 award | Performance Shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares granted |  | 582,944 |  |  |
2021 award | Performance Shares | NOEPS |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares nonvested | 186,427 |  |  | 186,427 |
2021 award | Performance Shares | CVI |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares nonvested | 186,427 |  |  | 186,427 |
2021 Special award | Performance Shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares granted |  |  | 390,041 |  |

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