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Other assets - Narrative (Details) $ in Millions | Dec. 31, 2020 USD ($) vessel | Dec. 31, 2019 USD ($)
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Subclassifications of assets, liabilities and equities [abstract] |  |
Restricted cash and cash equivalents | $ 42.0 | $ 39.4
Restricted cash, major maintenance | $ 6.2 |
Restricted cash, number of vessels | vessel | 2 |
Restricted cash, current hedge | $ 0.4 |

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- Definition The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Restricted cash, number of vessels + References No definition available. + Details
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