Income Taxes - Schedule of Cash Taxes Paid (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Effective Income Tax Rate Reconciliation [Line Items]
Federal	$ 0
State	(1)
Total cash taxes paid	258	$ 281	$ 321
Brazil
Effective Income Tax Rate Reconciliation [Line Items]
Foreign	19
Ireland
Effective Income Tax Rate Reconciliation [Line Items]
Foreign	119
Singapore
Effective Income Tax Rate Reconciliation [Line Items]
Foreign	15
Other foreign jurisdictions
Effective Income Tax Rate Reconciliation [Line Items]
Foreign	$ 106