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Equity Compensation and Other Benefits - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Income tax benefit related to stock based compensation expense			$ 3.8	$ 6.1
Share-based compensation	$ 0.4	$ 1.4	3.0	$ 2.4
Stock options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized compensation cost, period for recognition	3.2		$ 3.2		$ 6.2
Unrecognized compensation cost, period for recognition			2 years 1 month 6 days		2 years 7 months 6 days
Restricted stock units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized compensation cost, period for recognition			2 years 6 months		2 years 8 months 12 days
Unrecognized compensation cost	$ 26.8		$ 26.8		$ 51.6