FINANCIAL INSTRUMENTS - Schedule of Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Recurring
Asset Category
Total	$ 133.7	$ 131.9
Liability Category
Total	2.2	5.5
Level 2 | Recurring | Metals contracts
Asset Category
Derivative asset	3.8	2.5
Liability Category
Derivative liability	0.4	5.0
Level 3 | Recurring
Asset Category
Available-for-sale debt securities	14.1	11.5
Foreign exchange contracts | Level 2 | Recurring
Asset Category
Derivative asset	0.6	0.2
Liability Category
Derivative liability	0.2	0.5
Interest rate swaps
Asset Category
Derivative asset	40.5	47.3
Interest rate swaps | Level 2 | Recurring | Other current assets
Asset Category
Derivative asset	30.5	32.7
Interest rate swaps | Level 2 | Recurring | Other assets
Asset Category
Derivative asset	10.0	14.6
Cross-currency swaps
Asset Category
Derivative asset	73.1	70.4
Cross-currency swaps | Level 2 | Recurring
Liability Category
Derivative liability	1.6	0.0
Cross-currency swaps | Level 2 | Recurring | Other current assets
Asset Category
Derivative asset	38.7	26.1
Cross-currency swaps | Level 2 | Recurring | Other assets
Asset Category
Derivative asset	$ 36.0	$ 44.3