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INCOME TAX EXPENSE
 9 Months Ended
Jun. 30, 2024
INCOME TAX EXPENSE  
INCOME TAX EXPENSE

9.    INCOME TAX EXPENSE

The third quarter 2024 effective income tax rate was 21.4% compared to 21.3% in the third quarter of 2023. The effective income tax rate in the first nine months of 2024 was 21.2% compared to 22.1% for the first nine months of 2023. Income tax expense in the first nine months of 2024 was favorably impacted by discrete events that occurred during the second quarter of 2024 including the release of a foreign valuation allowance and excess tax benefit related to the vesting of share-based director compensation.