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General information / summary of general accounting policies - Additional Information (Detail) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 employee continent numberOfNationalities | Dec. 31, 2021 employee | Dec. 31, 2020 employee
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Total employees (in FTEs) | 39,086 | 32,016 | 28,073
Number of different nationalities of entity employees | numberOfNationalities | 143 |  |
Number of continents | continent | 3 |  |
Voting rights required for consolidation of subsidiaries | 50.00% |  |
Minimum |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Total employees (in FTEs) | 39,000 |  |

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