Income Taxes - Domestic and Foreign Components of Income Before Provision For (Benefit From) Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Income Tax Disclosure [Abstract]
Domestic	$ 5,119	$ 4,045	$ 398
Foreign	2,319	905	262
Income before provision for income taxes	$ 7,438	$ 4,950	$ 660