CAPITAL STOCK - Schedule of SBC Expense and TRS Fair Value Adjustments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Employee SBC expense	$ 57.4	$ 55.6	$ 51.0
Total TRS FVAs (gains)	(91.0)	(45.6)	0.0
Total of Employee Share-Based Payment Arrangement, Expense and Gains (losses) on Change in Fair Value of Derivatives	(33.6)	10.0	51.0
Cost of sales
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Employee SBC expense	24.8	22.6	20.3
Total TRS FVAs (gains)	(39.6)	0.0	0.0
SG&A
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Employee SBC expense	32.6	33.0	30.7
Total TRS FVAs (gains)	(51.4)	0.0	0.0
Miscellaneous (expense) income
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total TRS FVAs (gains)	$ 0.0	$ (45.6)	$ 0.0