Common Stock and Stockholders' Equity - Narrative (Details) $ in Millions	12 Months Ended
	Jan. 31, 2023 USD ($) vote shares	Jan. 31, 2022 USD ($) shares	Jan. 31, 2021 USD ($) shares
Class of Stock [Line Items]
Non-cash charitable contributions | $	$ 4	$ 7	$ 9
Class A Common Stock
Class of Stock [Line Items]
Number of votes per share | vote	1
Number of shares issued upon conversion	1
Class A Common Stock  | Contribution of nonmonetary assets to charitable organization
Class of Stock [Line Items]
Issuance of common stock pursuant to charitable donation (in shares) | shares	41,250	30,000	42,500
Non-cash charitable contributions | $	$ 4	$ 7	$ 9
Class B Common Stock
Class of Stock [Line Items]
Number of votes per share | vote	10