Leases - Summary of Lease Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets
Operating lease assets	$ 229.3	$ 248.0
Finance lease assets	$ 3.2	$ 3.4
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Total lease assets	$ 232.5	$ 251.4
Liabilities
Operating lease liabilities	246.6	269.3
Finance lease liabilities	$ 3.1	$ 3.3
Finance Lease, Liability, Statement of Financial Position [Extensible List]	Notes and contracts payable	Notes and contracts payable
Total lease liabilities	$ 249.7	$ 272.6