Leases - Supplemental balance sheet (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease assets	$ 337.7	$ 314.5
Finance lease assets	$ 283.7	$ 217.9
Finance lease, right-of-use asset, statement of financial position [extensible enumeration]	Property and equipment, net	Property and equipment, net
Total lease assets	$ 621.4	$ 532.4
Current liabilities operating leases	$ 79.5	$ 74.7
Operating lease, liability, current, statement of financial position [extensible enumeration]	Accrued liabilities	Accrued liabilities
Current liabilities financing leases	$ 57.5	$ 43.0
Finance lease, liability, current, statement of financial position [extensible enumeration]	Current maturities of long-term debt	Current maturities of long-term debt
Lease liabilities	$ 265.8	$ 249.9
Finance lease, liability, noncurrent, statement of financial position [extensible enumeration]	Long-term debt	Long-term debt
Noncurrent liabilities financing leases	$ 176.3	$ 149.2
Total lease liabilities	$ 579.1	$ 516.8