Stock-Based Compensation Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2020	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 123.7			$ 123.7
Grant date and recognized in compensation expense over (in year)		4 years 3 months 18 days
Continuing Operations
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense	$ 11.2	$ 20.1		35.2	$ 62.3
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting/performance period (in years)			2 years
Equity Awards | Continuing Operations | 2013 Stock Incentive Plan and 2017 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense				34.6
Stock Appreciation Rights (SARs) | Continuing Operations | 2013 Stock Incentive Plan and 2017 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in liabilities				$ 0.6
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock for stock-based compensation plans (in shares)		400,000
Award expiration period (in years)				10 years
Stock Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting/performance period (in years)				4 years
Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting/performance period (in years)				5 years
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting/performance period (in years)		5 years		3 years	3 years
Volume-weighted average closing (in days)		60 days
Closing price per share (in usd per share)		$ 81.85			$ 81.85