Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts:
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	$ 5.7	$ 5.4	$ 4.9
Charged to Expense	3.7	2.3	3.2
Deductions	(4.4)	(2.0)	(2.7)
Balance End of Year	5.0	5.7	5.4
Deferred income tax asset valuation allowance:
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	5.7	3.2	1.4
Additions	0.8	2.5	1.8
Deductions	(1.9)	0.0	0.0
Balance End of Year	$ 4.6	$ 5.7	$ 3.2