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Long-term debt - Narrative (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2022 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Long Term Debt [Line Items] |  |  |
Repayments of non-current borrowings |  | $ 101.6 | $ 0.0
Borrowings |  | 1,503.0 | $ 1,658.8
Senior unsecured notes - due May 15, 2025 |  |  |
Long Term Debt [Line Items] |  |  |
Repayments of non-current borrowings | $ 100.0 |  |
Senior unsecured notes - due July 15, 2027 |  |  |
Long Term Debt [Line Items] |  |  |
Borrowings |  | $ 400.0 |
Borrowings, interest rate |  | 7.50% |
Borrowings, covenant, interest coverage ratio, minimum |  | 2 |
Borrowings redemption price percentage |  | 100.00% |
Credit Facility |  |  |
Long Term Debt [Line Items] |  |  |
Loss on repayment of long-term debt | $ 4.3 |  |
Borrowing limit |  | $ 400.0 |
Credit facility full interest rate |  | 2.75% | 2.25%
Standby fees on undrawn amounts under credit facility, Percentage |  | 0.62% | 0.51%
Issuance of senior unsecured notes, net of transaction costs |  | $ 0.0 |
Letters of credit issued |  | $ 27.5 | $ 24.1
Credit Facility | Bottom of range |  |  |
Long Term Debt [Line Items] |  |  |
Credit facility full interest rate |  | 1.25% |
Standby fees on undrawn amounts under credit facility, Percentage |  | 0.51% |
Credit Facility | Top of range |  |  |
Long Term Debt [Line Items] |  |  |
Credit facility full interest rate |  | 3.75% |
Standby fees on undrawn amounts under credit facility, Percentage |  | 0.84% |

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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_7&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The cash inflow from non-current borrowings obtained. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2022-03-24 -Paragraph 17 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2022-en-r&anchor=para_17&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Borrowings, Covenant, Interest Coverage Ratio, Minimum + References No definition available. + Details
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