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Income Taxes | 3 Months Ended
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Mar. 31, 2023
Income Taxes |
Income Taxes | Note 7. Income Taxes ​ Our effective income tax rates for the first quarters of 2023 and 2022 were 24.4% and 24.8%, respectively. The differences between our effective income tax rates and the U.S. federal statutory rate of 21.0% were mainly due to state income taxes and higher foreign income tax rates, partially offset by the effects of company-owned life insurance policies. ​

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