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Income Taxes - Factors Effecting Effective Tax Rate from U.S. Federal Statutory Rate (Detail) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income Tax Disclosure [Abstract] |  |  |
Statutory rate | 21.00% | 21.00% | 21.00%
Foreign income inclusions | 13.50% | 2.10% | 3.30%
Foreign tax rate differential | (3.20%) | 0.90% | 0.90%
Tax charge/(credit) from previous years | (1.00%) | (2.60%) | 0.20%
Net charge/(credit) from unrecognized tax benefits | (24.60%) | 0.70% | (1.40%)
Foreign currency transactions | (0.90%) | (1.40%) | 3.50%
Tax on unremitted earnings | 1.90% | 1.40% | 0.30%
State and local taxes | 4.60% | 1.00% | 2.20%
US incentive for foreign derived intangible income | (4.80%) | (2.80%) | (2.70%)
Innovation incentives | (6.90%) | (1.30%) | (0.80%)
Non-deductible officer compensation | 4.70% | 1.00% | 1.40%
Adjustment to contingent consideration | 1.80% | 0.00% | 0.00%
Movement in unrecognized deferred taxes | 6.60% | (0.30%) | 0.00%
Impact of internal reorganizations | 1.20% | 0.00% | 0.00%
Meals and entertainment | 0.80% | 0.20% | 0.10%
Stock compensation | (0.90%) | (0.50%) | 0.00%
Other items and adjustments, net | (0.20%) | 0.80% | 0.00%
Effective Income Tax Rate | 13.60% | 20.20% | 28.00%

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