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SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Supplemental Cash Flow Elements [Abstract]
Cash paid for income taxes	$ 0.0	$ 0.3
Cash paid for interest	0.2	0.0
Change in operating lease right-of-use assets and lease liabilities
Operating lease right-of-use assets	(0.3)	6.0
Operating lease liabilities	(3.1)	6.0
Tenant improvement allowance not yet received	0.0	2.7
Purchases of property, plant and equipment and capitalization of internal-use software in accounts payable and accrued liabilities	$ 4.5	$ 8.0

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- Definition

Change In Operating Lease Liability

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- Definition

Change In Operating Lease, Right-Of-Use Asset

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- Definition

Purchases Of Property, Plant And Equipment And Capitalization Of Internal-use Software In Accounts Payable And Accrued Liabilities

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- Definition

Tenant Improvement Allowance Not Yet Received

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482913/230-10-50-2

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-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-25

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-17

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