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Fair value measurements - Level 3 Significant Unobservable Inputs (Details) $ in Millions | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability value | $ 8.0 | $ 38.4 | $ 59.3 | $ 30.4
Fair Value, Inputs, Level 3 | Fair Value, Recurring |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability value | $ 8.0 |  |  |
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Discount rate | Discounted cash flow | Maximum |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 0.099 |  |  |
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Probability of payment | Discounted cash flow | Minimum |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 0.250 |  |  |
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Probability of payment | Discounted cash flow | Maximum |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 0.500 |  |  |

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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. + References No definition available. + Details
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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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