Investments - Schedule of Strategic Investments (Details) - USD ($) $ in Millions	Apr. 30, 2025	Jan. 31, 2025
Investment Holdings [Line Items]
Strategic investments	$ 4,941	$ 4,852
Equity securities
Investment Holdings [Line Items]
Strategic investments	4,905	4,811
Other investments
Investment Holdings [Line Items]
Strategic investments	36	41
Fair Value
Investment Holdings [Line Items]
Strategic investments	53	69
Fair Value | Equity securities
Investment Holdings [Line Items]
Strategic investments	53	69
Fair Value | Other investments
Investment Holdings [Line Items]
Strategic investments	0	0
Measurement Alternative
Investment Holdings [Line Items]
Strategic investments	4,715	4,617
Measurement Alternative | Equity securities
Investment Holdings [Line Items]
Strategic investments	4,715	4,617
Measurement Alternative | Other investments
Investment Holdings [Line Items]
Strategic investments	0	0
Other
Investment Holdings [Line Items]
Strategic investments	173	166
Other | Equity securities
Investment Holdings [Line Items]
Strategic investments	137	125
Other | Other investments
Investment Holdings [Line Items]
Strategic investments	$ 36	$ 41