Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finance lease cost:
Amortization of finance lease assets	$ 1.5	$ 1.5	$ 1.5
Interest on lease liabilities	0.9	1.0	1.1
Total finance lease cost	2.4	2.5	2.6
Operating lease cost	81.4	77.0	74.4
Short-term lease cost	27.0	22.7	18.0
Variable lease cost	17.2	19.4	12.9
Total lease cost	$ 128.0	$ 121.6	$ 107.9