Basis of Presentation (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of change	$ (379)	$ (233)
Revision of Prior Period, Reclassification, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of change		$ 63