LEASES - Supplemental Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
LEASES.
Operating lease right of use assets	$ 114.2	$ 110.1
Operating Lease, Right of Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Accrued liabilities	$ 18.2	$ 15.6
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts Payable and Accrued Liabilities, Current	Accounts Payable and Accrued Liabilities, Current
Non-current operating lease liabilities	$ 131.8	$ 129.2
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Non-current operating lease liabilities	Non-current operating lease liabilities
Total lease liabilities	$ 150.0	$ 144.8