Segments - Schedule of Other Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Segment Reporting [Abstract]
Interest income	$ 21	$ 22	$ 40	$ 46
Interest expense	19	18	37	36
Depreciation, amortization, and accretion expense	47	46	95	86
Amortization of costs to obtain a contract with a customer	$ 123	$ 44	$ 219	$ 85