Investments - Schedule of Strategic Investments (Details) - USD ($) $ in Millions	Jan. 31, 2025	Jan. 31, 2024
Investment Holdings [Line Items]
Strategic investments	$ 4,852	$ 4,848
Equity securities
Investment Holdings [Line Items]
Strategic investments	4,811	4,767
Debt securities and other investments
Investment Holdings [Line Items]
Strategic investments	41	81
Fair Value
Investment Holdings [Line Items]
Strategic investments	69	80
Fair Value | Equity securities
Investment Holdings [Line Items]
Strategic investments	69	80
Fair Value | Debt securities and other investments
Investment Holdings [Line Items]
Strategic investments	0	0
Measurement Alternative
Investment Holdings [Line Items]
Strategic investments	4,617	4,557
Measurement Alternative | Equity securities
Investment Holdings [Line Items]
Strategic investments	4,617	4,557
Measurement Alternative | Debt securities and other investments
Investment Holdings [Line Items]
Strategic investments	0	0
Other
Investment Holdings [Line Items]
Strategic investments	166	211
Other | Equity securities
Investment Holdings [Line Items]
Strategic investments	125	130
Other | Debt securities and other investments
Investment Holdings [Line Items]
Strategic investments	$ 41	$ 81