Basis of Presentation (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of change	$ (455)	$ (421)
Revision of Prior Period, Reclassification, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of change		$ 97