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Fair value measurement - Financial assets and liabilities carried at fair value measured on recurring basis (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Investments in marketable securities | $ 5,306 | $ 10,097
Derivative assets | 19,449 | 63,610
Derivative liabilities | 35,303 | 1,460
Contingent consideration liabilities | 39,486 | 44,022
Standard Bariatrics | Maximum |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Contingent consideration liabilities | 177,000 |
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Investments in marketable securities | 5,306 | 10,097
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Contingent consideration liabilities | 0 | 0
Significant Observable Inputs (Level 2) |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Investments in marketable securities | 0 | 0
Derivative assets | 19,449 | 63,610
Derivative liabilities | 35,303 | 1,460
Contingent consideration liabilities | 0 | 0
Significant Unobservable Inputs (Level 3) |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Investments in marketable securities | 0 | 0
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Contingent consideration liabilities | $ 39,486 | $ 44,022

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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