LEASES - Related Parties Balance Sheet Classification (Details) $ in Millions	Dec. 31, 2023 USD ($) lease	Dec. 31, 2022 USD ($)	Aug. 31, 2021 lease
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 163.9	$ 161.8
Current portion of operating lease liabilities	23.9	24.1
Operating lease liabilities, noncurrent	134.1	126.7
Total lease liabilities	$ 158.0	150.8
Related Party
Lessee, Lease, Description [Line Items]
Number of leases | lease	24		24
Operating lease assets	$ 108.5	105.3
Current portion of operating lease liabilities	14.2	14.5
Operating lease liabilities, noncurrent	96.2	93.7
Nonrelated Party
Lessee, Lease, Description [Line Items]
Operating lease assets	55.4	56.5
Current portion of operating lease liabilities	9.7	9.6
Operating lease liabilities, noncurrent	$ 37.9	$ 33.0