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INCOME TAXES
 3 Months Ended
Mar. 31, 2024
Income Tax Disclosure [Abstract]  
INCOME TAXES
The effective tax rate for the three months ended March 31, 2024 and 2023 was 21.0% and 18.3%, respectively. For the three months ended March 31, 2024 and 2023, the effective tax rate reflects discrete income tax benefits of $7.7 million and $21.2 million, respectively, resulting from the exercise and vesting of stock-based awards. These discrete income tax benefits reduced the estimated annual effective tax rate in such periods by approximately 5.3 and 8.8 percentage points, respectively.
The effective tax rate, excluding discrete income tax benefits, differs from the federal statutory income tax rate due primarily to state income taxes, nondeductible expenses, and the tax impact of international operations.
There have been no material adjustments to liabilities for uncertain tax positions since December 31, 2023.