Leases - Balance Sheet Location of Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 183.6	$ 217.1
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Finance leases assets	$ 13.7	$ 22.0
Right-of-use assets	$ 197.3	$ 239.1
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Operating lease liability, current	$ 27.5	$ 28.4
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current indebtedness	Current indebtedness
Finance lease liability, current	$ 1.9	$ 3.3
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other non-current liabilities	Other non-current liabilities
Operating lease liability, noncurrent	$ 159.6	$ 189.5
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Total long-term debt less current portion	Total long-term debt less current portion
Finance lease liability, noncurrent	$ 13.2	$ 17.4
Present value of lease liabilities	202.2	238.6
Total operating lease liabilities	187.1	217.9
Total finance lease liabilities	15.1	20.7
Unallocated
Lessee, Lease, Description [Line Items]
Operating lease assets	59.6	67.1
Finance leases assets	0.6	1.6
Total operating lease liabilities	57.7	64.0
Total finance lease liabilities	0.6	1.7
CSCA | Operating Segments
Lessee, Lease, Description [Line Items]
Operating lease assets	79.3	100.5
Finance leases assets	12.8	13.8
Total operating lease liabilities	81.6	102.2
Total finance lease liabilities	14.2	14.9
CSCI | Operating Segments
Lessee, Lease, Description [Line Items]
Operating lease assets	44.7	49.5
Finance leases assets	0.3	6.6
Total operating lease liabilities	47.8	51.7
Total finance lease liabilities	$ 0.3	$ 4.1