Fair value of financial assets and liabilities - Financial assets and liabilities measured at fair value (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2023 |
Dec. 31, 2024 |
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| Fair value of financial assets and liabilities | ||
| Cash equivalents | $ 72.3 | $ 664.9 |
| Recurring | ||
| Fair value of financial assets and liabilities | ||
| Liabilities at fair value | 0.0 | 0.0 |
| Assets at fair value | 0.0 | 0.0 |
| Level 1 | Recurring | ||
| Fair value of financial assets and liabilities | ||
| Cash equivalents | 72.3 | 664.9 |
| Level 1 | Recurring | Cash equivalents | ||
| Fair value of financial assets and liabilities | ||
| Market funds | 22.1 | $ 664.9 |
| Term deposits | $ 50.2 | |
| Term deposit maturity period | 30 days |
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- Definition The maturity period of term deposit. No definition available.
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- Definition Fair value portion of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. No definition available.
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- Definition Any certificate of deposit or savings account held by a bank or other financial institution for a short-term specified period of time. Because of their short-term, time deposits are considered highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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