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Income Taxes
3 Months Ended
Mar. 31, 2022
Income Taxes [Abstract]  
Income Taxes 7. Income TaxesThe effective income tax rate for the three months ended March 31, 2022, was 16.7%, a decrease from an effective income tax rate of 20.2% for the three months ended March 31, 2021. The decrease is due to an increase in tax benefits related to option exercises and equity vesting and, to a lesser extent, a reduction in nondeductible expenses and penalties.