FINANCIAL INSTRUMENTS - Marketable Securities (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Financial Instruments [Abstract]
Proceeds from sale of marketable securities	$ 0.5	$ 10.4
Acquisition date fair value of marketable securities sold	0.0	(10.3)
Gain (loss) on sale of marketable securities recorded in OCI	0.5	0.1
Reduction in value of marketable securities	0.0	(5.0)
Impairment loss on OCI realized on marketable securities sold	(0.3)	0.0
Reduction in value of marketable securities	$ 0.2	$ (4.9)

Financial Instruments [Abstract]

No definition available.

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- Definition

Other Comprehensive Income, Impairment (Reversal of Impairment) on Available-for-Sale Financial Assets

+ References

No definition available.

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- Definition

The gains (losses) on available-for-sale financial assets. [Refer: Financial assets available-for-sale]

+ References

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The gains (losses) recognised in other comprehensive income on financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9, before tax, before reclassification adjustments. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]

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- Definition

The gains (losses) recognised in other comprehensive income on remeasuring available-for-sale financial assets, before tax, before reclassification adjustments. [Refer: Financial assets available-for-sale]

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- Definition

The increase (decrease) in the aggregate difference between the fair value at initial recognition and the transaction price of financial instruments yet to be recognised in profit or loss resulting from amounts recognised in profit or loss. [Refer: Aggregate difference between fair value at initial recognition and transaction price yet to be recognised in profit or loss; Financial instruments, class [member]]

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The cash inflow from the disposal or maturity of available-for-sale financial assets. [Refer: Financial assets available-for-sale]

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