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LONG-TERM DEBT AND CREDIT FACILITY - Schedule of Contractual Maturities (Details) - USD ($) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Sep. 23, 2020 | Jun. 27, 2019 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Carrying amount of long-term debt |  |  | $ 450.0 | $ 450.0
Borrowing costs capitalised |  |  | 31.4 | 24.5
5.75% senior notes |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Carrying amount of long-term debt | $ 454.2 |  | 450.0 | 450.0
Contractual cash flows |  |  | 631.1 | 658.7
Borrowing costs capitalised | $ 7.5 |  |  |
5.75% senior notes | Unamortized deferred transactions costs |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Borrowing costs capitalised |  |  | 6.3 | 7.2
5.75% senior notes | Not later than one year |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Contractual cash flows |  |  | 25.9 | 27.5
5.75% senior notes | Later than one year and not later than three years |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Contractual cash flows |  |  | 51.8 | 51.8
5.75% senior notes | Later than three years and not later than five years |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Contractual cash flows |  |  | 51.8 | 51.8
5.75% senior notes | Later than five years |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Contractual cash flows |  |  | 501.6 | 527.6
Equipment loans |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Carrying amount of long-term debt |  |  | 18.9 | 28.2
Contractual cash flows |  |  | 20.5 | 31.3
Borrowing costs capitalised |  | $ 0.3 |  |
Equipment loans | Unamortized deferred transactions costs |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Borrowing costs capitalised |  |  | 0.2 | 0.2
Equipment loans | Not later than one year |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Contractual cash flows |  |  | 8.5 | 9.4
Equipment loans | Later than one year and not later than three years |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Contractual cash flows |  |  | 12.0 | 17.9
Equipment loans | Later than three years and not later than five years |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Contractual cash flows |  |  | 0.0 | 4.0
Equipment loans | Later than five years |  |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |  |
Contractual cash flows |  |  | $ 0.0 | $ 0.0

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- Definition The amount of contractual undiscounted cash flows in relation to bank borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph B11D -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_B11D&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph IG31A -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_IG31A&doctype=Implementation%20Guidance -URIDate 2021-03-24 + Details
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- Definition The amount of interest and other costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 23 -IssueDate 2021-01-01 -Paragraph 26 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=23&code=ifrs-tx-2021-en-r&anchor=para_26_a&doctype=Standard -URIDate 2021-03-24 + Details
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