Leases - Balance Sheet Location of Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 199.9	$ 217.1
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other non-current assets	Other non-current assets
Finance leases	$ 19.4	$ 22.0
Right-of-use asset	$ 219.3	$ 239.1
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Operating lease liability, current	$ 27.9	$ 28.4
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current indebtedness	Current indebtedness
Finance lease liability, current	$ 2.1	$ 3.3
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other non-current liabilities	Other non-current liabilities
Operating lease liability, noncurrent	$ 173.0	$ 189.5
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term debt, less current portion	Long-term debt, less current portion
Finance lease liability, noncurrent	$ 16.3	$ 17.4
Present value of lease liabilities	219.3	238.6
Total operating lease liabilities	200.9	217.9
Total finance lease liabilities	18.4	20.7
Segment Reconciling Items
Lessee, Lease, Description [Line Items]
Operating lease assets	61.8	67.1
Finance leases	0.2	1.6
Total operating lease liabilities	58.1	64.0
Total finance lease liabilities	0.2	1.7
CSCA | Operating Segments
Lessee, Lease, Description [Line Items]
Operating lease assets	93.9	100.5
Finance leases	13.2	13.8
Total operating lease liabilities	95.9	102.2
Total finance lease liabilities	14.5	14.9
CSCI | Operating Segments
Lessee, Lease, Description [Line Items]
Operating lease assets	44.2	49.5
Finance leases	6.0	6.6
Total operating lease liabilities	46.9	51.7
Total finance lease liabilities	$ 3.7	$ 4.1