LEASES - Schedule of Other Information Related to Leases (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
ROU assets:
Operating lease ROU assets	$ 124.5	$ 124.4
Finance lease ROU assets (included in property, plant & equipment, net)	$ 54.4	$ 56.4
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Total ROU assets	$ 178.9	$ 180.8
Current portion of lease obligations:
Operating lease liability (included in accrued and other current liabilities and provisions)	$ 29.5	$ 25.7
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued and other current liabilities and provisions	Accrued and other current liabilities and provisions
Finance lease liability (included in current portion of borrowings under credit facility and finance lease obligations)	$ 10.9	$ 9.9
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current portion	Current portion
Long-term portion of lease obligations:
Operating lease liability (included in other non-current liabilities and provisions)	$ 108.5	$ 109.4
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other non-current liabilities and provisions	Other non-current liabilities and provisions
Finance lease liability (included in long-term portion of borrowings under credit facility and finance lease obligations)	$ 50.6	$ 51.8
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term portion	Long-term portion
Total lease obligations	$ 199.5	$ 196.8