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Income Taxes
 3 Months Ended
Apr. 30, 2024
Income Tax Disclosure [Abstract]  
Income Taxes Income TaxesFor the three months ended April 30, 2024 and 2023, our effective tax rates were 21.9% and (43.3)%, respectively. During the three months ended April 30, 2024, as compared to the prior year period, our effective tax rate increased primarily due to reduced excess tax benefits related to equity compensation. We recognized excess tax benefits of $4 million and $64 million in our provision for income taxes for the three months ended April 30, 2024 and 2023, respectively. The decrease in excess tax benefits during the three months ended April 30, 2024 was primarily due to stock option exercises by our Chief Executive Officer in the prior year and none in the current year.