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Income Taxes
 9 Months Ended
Sep. 30, 2024
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The effective tax rates were 38.9 percent and 19.1 percent for the three and nine months ended September 30, 2024, respectively, and 113.4 percent and 24.6 percent for the three and nine months ended September 30, 2023, respectively, primarily driven by unfavorable tax impacts of non-deductible acquired IPR&D charges, with a larger impact occurring in 2023.
The U.S. examination of tax years 2016-2018 began in 2019 and remains ongoing. The Internal Revenue Service commenced its examination of tax years 2019-2021 during the third quarter of 2023. The resolution of both audit periods will likely extend beyond the next 12 months.