Leases - Supplemental Consolidated Balance Sheet information Related Operating Leases (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 128.8	$ 149.2
Current operating lease liabilities	34.0	31.9
Long-term operating lease liabilities	164.0	175.2
Total lease liabilities	$ 198.0	$ 207.1
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other	Other
Weighted average remaining lease term (years)	8 years	8 years 4 months 24 days
Weighted average discount rate	4.03%	3.86%