Goodwill and intangible assets - Summary of Intangible Assets (Detail) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | $ 1,550.1 | $ 1,585.5 |
| Accum. Amort. | (830.4) | (808.2) |
| Net | 719.7 | 777.3 |
| Customer Relationships [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | 886.9 | 912.4 |
| Accum. Amort. | (485.8) | (473.4) |
| Net | 401.1 | 439.0 |
| Capitalized Development Costs [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | 460.4 | 465.3 |
| Accum. Amort. | (344.0) | (334.2) |
| Net | 116.4 | 131.1 |
| Trademarks and Trade Names [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | 202.0 | 207.0 |
| Accum. Amort. | 0.0 | 0.0 |
| Net | 202.0 | 207.0 |
| Developed Technology Rights [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | 0.8 | 0.8 |
| Accum. Amort. | (0.6) | (0.6) |
| Net | $ 0.2 | $ 0.2 |
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- Definition Amount of accumulated amortization of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. 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/2009/role/commonPracticeRef
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- Definition Amount, after accumulated amortization, of finite- and indefinite-lived intangible assets and capitalized cost for software to be sold, leased, or marketed. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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