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LEASES - Lease liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of maturity analysis of operating lease payments [line items] |  |
Total undiscounted lease payments | $ 35.4 |
Carrying value of lease liabilities | 32.6 |
Less: current portion of lease liabilities | (8.7) |
Non-current portion of lease liabilities | 23.9 | $ 8.9
2020 |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |
Total undiscounted lease payments | 9.8 |
Between 1 and 3 years |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |
Total undiscounted lease payments | 17.0 |
Between 3 and 5 years |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |
Total undiscounted lease payments | 8.6 |
More than 5 years |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |
Total undiscounted lease payments | $ 0.0 |

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- Definition The amount of current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of non-current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The undiscounted amount of lease payments to be made. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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