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Stock-Based Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The following table summarizes the Company's stock-based compensation expense included as a component of general and administrative expenses in the Consolidated Financial Statements:

			Year Ended December 31,
			2024						2023						2022
			(In millions)
Stock-based compensation expense
Equity classified awards expense			$	16.0					$	12.0					$	16.2
Liability classified awards expense			0.3						(1.4)						1.4
Total stock-based compensation expense			16.3						10.6						17.6

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following table summarizes the assumptions used in the Black-Scholes model for stock options granted in the years ended December 31, 2024, 2023 and 2022:

			2024						2023						2022
Risk free interest rate			4.3		%				4.4		%				1.7		%
Weighted average historical volatility			70.2		%				70.9		%				70.1		%
Dividend yield			4.2		%				2.7		%				2.6		%
Expected years until exercise			4.5						4.5						4.5
Weighted average fair value of options granted			$	22.26					$	37.35					$	33.23

Schedule of Share-based Compensation, Stock Options, Activity

Stock option activity for the years ended December 31, 2024, 2023 and 2022 is summarized as follows:

			Number of Shares Under Option						Weighted Average Exercise Price Per Share						Weighted Average Remaining Contractual Term (in years)						Aggregate Intrinsic Value (in millions)
Outstanding at December 31, 2021			475,904						76.65
Granted			75,795						70.08
Exercised			(3,505)						68.80
Forfeited			(6,171)						81.13
Expired			(2,448)						94.43
Outstanding at December 31, 2022			539,575						75.65
Granted			74,390						74.94
Exercised			(69,443)						54.90
Forfeited			(20,876)						79.11
Expired			(61,140)						82.47
Outstanding at December 31, 2023			462,506						77.59
Granted			133,729						49.06
Exercised			—						—
Forfeited			(14,717)						56.03
Expired			(56,872)						87.07
Outstanding at December 31, 2024			524,646						69.89						6.01						$	—
Vested and Expected to Vest at December 31, 2024			509,056						$	70.38					5.92						$	—
Exercisable at December 31, 2024			344,411						$	76.38					4.60						$	—

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

Activity in equity classified awards of restricted stock and restricted stock units for the years ended December 31, 2024, 2023 and 2022 is as follows:

			Shares of Restricted Stock						Weighted Average Grant-Date Per Share Fair Value						Restricted Stock Units						Weighted Average Grant-Date Per Share Fair Value
Outstanding at December 31, 2021			276,611						80.85						105,592						71.00
Granted			201,789						70.12						60,914						49.36
Released			(98,864)						86.36						(42,611)						66.63
Forfeited			(23,636)						75.89						—						—
Outstanding at December 31, 2022			355,900						73.57						123,895						62.11
Granted			211,820						73.12						21,731						74.01
Released			(165,533)						73.64						(47,857)						64.04
Forfeited			(63,565)						73.15						(39,294)						77.23
Outstanding at December 31, 2023			338,622						73.33						58,475						54.07
Granted			311,955						47.55						32,630						49.06
Released			(155,368)						74.37						(18,115)						73.97
Forfeited			(73,750)						60.10						(37)						74.94
Outstanding at December 31, 2024			421,459						$	56.18					72,953						$	46.83

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

The Company has granted cash-settled restricted stock units to certain employees in the past. These instruments are recorded as liabilities at fair value as of the respective period end.

						Cash-Settled Restricted Stock Units
Outstanding at December 31, 2021						12,799
Granted						67
Released						(12,866)
Forfeited						—
Outstanding at December 31, 2022						—
Outstanding at December 31, 2023						—
Outstanding at December 31, 2024						—

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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