GOODWILL AND INTANGIBLE ASSETS - Schedule of Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill
Cost	$ 395.9	$ 377.1
Accumulated Amortization and Impairment	55.4	55.4
Carrying Amount	340.5	321.7	$ 321.8
Finite-Lived Intangible Assets [Line Items]
Cost	1,119.2	1,094.4
Accumulated Amortization and Impairment	811.2	776.1
Finite-lived intangible assets, net, total	308.0	318.3
Cost	395.9	377.1
Accumulated Amortization and Impairment	55.4	55.4
Goodwill	340.5	321.7	$ 321.8
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Cost	112.0	111.3
Accumulated Amortization and Impairment	111.4	111.3
Finite-lived intangible assets, net, total	0.6	0.0
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Cost	693.9	672.3
Accumulated Amortization and Impairment	403.6	371.9
Finite-lived intangible assets, net, total	290.3	300.4
Computer software assets
Finite-Lived Intangible Assets [Line Items]
Cost	313.3	310.8
Accumulated Amortization and Impairment	296.2	292.9
Finite-lived intangible assets, net, total	$ 17.1	$ 17.9