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Income Taxes
9 Months Ended
Sep. 30, 2023
Income Taxes  
Income Taxes

9.    Income Taxes

The effective income tax rates for the three months ended September 30, 2023 and 2022 were 25.7% and 24.4%, respectively. The effective income tax rates for the nine months ended September 30, 2023 and 2022 were 25.8% and 24.8%, respectively. The 2023 and 2022 effective tax rates differed from the federal rate of 21% primarily because of state and foreign taxes.