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FINANCIAL RISK MANAGEMENT- Exposure to currency risk (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Exposure to currency risk |  |  |
Cash and cash equivalents | $ 83.4 | $ 103.7 | $ 216.2
Deferred tax liability | (48.3) | (56.3) |
Reclamation and closure cost obligations | (107.0) | (92.6) | $ (124.1)
Canada, Dollars | Currency risk [member] |  |  |
Exposure to currency risk |  |  |
Cash and cash equivalents | 11.0 | 12.9 |
Trade and other receivables | 7.0 | 9.9 |
Income tax (payable) receivable | (0.3) |  |
Trade and other payables | (86.8) | (105.0) |
Deferred tax liability | (48.3) | (54.5) |
Reclamation and closure cost obligations | (93.3) | (72.6) |
Performance share units and restricted share units | (1.9) | (0.5) |
Total exposure to currency risk | (212.6) | (209.8) |
Mexico, Pesos | Currency risk [member] |  |  |
Exposure to currency risk |  |  |
Cash and cash equivalents | 0.3 | 0.6 |
Trade and other receivables | 0.9 | 4.9 |
Income tax (payable) receivable | 4.6 | 4.6 |
Trade and other payables | (13.5) | (14.1) |
Deferred tax liability | 0.0 |  |
Reclamation and closure cost obligations | (1.4) | (13.5) |
Performance share units and restricted share units | 0.0 | 0.0 |
Total exposure to currency risk | $ (9.1) | $ (17.5) |

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_i&doctype=Standard -URIDate 2019-03-27 + Details
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