Fair value measurements - Narrative (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Investments in equity securities recorded at cost | $ 3.5 | $ 3.5 |
| Long-term debt at fair value | 3,480.4 | 3,469.2 |
| Level 3 | Fair value, nonrecurring | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Total assets | 12,539.0 | 12,614.7 |
| Goodwill at fair value | 9,092.4 | 9,051.4 |
| Net intangible assets at fair value | $ 3,443.1 | $ 3,559.8 |
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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 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 portion of assets, excluding financial assets, that lack physical substance, having a limited useful life. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value portion of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Includes other investments and securities that are not at fair value as of the balance sheet date and those that are not accounted for under the equity method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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