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Debt - Schedule of Maturities of Long-term Debt (Details) - USD ($) $ in Millions	Jul. 31, 2025	Jan. 31, 2025
Debt Instrument [Line Items]
Total principal amount	$ 3,000	$ 3,000
Senior Notes
Debt Instrument [Line Items]
Remainder of 2026	0
2027	0
2028	1,000
2029	0
2030	750
Thereafter	1,250
Total principal amount	$ 3,000

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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