Performance Stock Options, Threshold Increase from Closing Price on Date of Grant

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- Definition

Performance Stock Options, Threshold Trading Days

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- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Conversion Ratio

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No definition available.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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.

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Number of shares authorized for issuance under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Gross number of share options (or share units) granted during the period.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Apr. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 13.9	$ 15.4	$ 18.3
Tax benefit from stock-based compensation arrangements	$ 1.8	$ 4.2	$ 2.5
Stock-based compensation, vesting period	3 years
Number of options granted (in shares)	0	0	0
Performance stock options, threshold trading days	20 days
Performance stock options, threshold increase from closing price on date of grant (in percent)	25.00%
Unrecognized compensation cost, non vested shares	$ 13.7
Unrecognized compensation cost, expected period of recognition (in years)	1 year 4 months 24 days
Fair value of restricted stock units and restricted stock awards vested	$ 15.7	$ 26.9	$ 16.9
Weighted average grant date fair value, awarded (in dollars per share)	$ 49.97	$ 60.45	$ 42.09
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, contractual term	10 years
Performance Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options intrinsic value	$ 1.3	$ 0.6	$ 1.1
Cash received from option exercise	$ 1.7	0.6	1.6
Equity Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options intrinsic value		$ 0.2	$ 0.2
Minimum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, vesting period	3 years
Maximum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, vesting period	5 years
2017 Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grant (in shares)				5,713,571
Conversion ratio full value awards				2.12
2017 Incentive Compensation Plan \| Full Value Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion ratio full value awards				2.12
2017 Incentive Compensation Plan \| Stock Options and Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion ratio full value awards				1
2017 Plan and 2013 Plan \| Performance Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, vesting period	3 years
Share-based compensation, contractual term	7 years
Options performance measurement period (in years)	4 years