CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Settlement of convertible senior notes	Adjustment	Common Stock Class A Common Stock	Common Stock Class A Common Stock  Conversion of Class B common stock to Class A common stock	Common Stock Class A Common Stock  Settlement of convertible senior notes	Common Stock Class B Common Stock	Common Stock Class B Common Stock  Conversion of Class B common stock to Class A common stock	Additional Paid-in Capital	Additional Paid-in Capital Settlement of convertible senior notes	Additional Paid-in Capital Adjustment	Accumulated Other Comprehensive Loss	Accumulated Deficit	Accumulated Deficit Adjustment
Beginning balance (in shares) at Jan. 31, 2022				149,624			6,978
Beginning balance at Jan. 31, 2022	$ 5,922			$ 0			$ 0		$ 7,750			$ (12)	$ (1,816)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net (in shares)				4,040			451
Issuance of common stock, net	52								52
Conversion of convertible securities (in shares)					129	356		(129)
Settlement of convertible senior notes		$ 17								$ 17
Proceeds from hedges related to convertible senior notes (in shares)				(140)
Stock-based compensation	683								683
Other comprehensive loss (income)	(21)											(21)
Net income (loss)	(815)												(815)
Ending balance (in shares) at Jan. 31, 2023				154,009			7,300
Ending balance at Jan. 31, 2023	5,466		$ (372)	$ 0			$ 0		7,974		$ (528)	(33)	(2,475)	$ 156
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net (in shares)				5,850
Issuance of common stock, net	67								67
Conversion of convertible securities (in shares)					9			(9)
Proceeds from hedges related to convertible senior notes (in shares)				(33)
Stock-based compensation	690								690
Settlement of warrants	(7)								(7)
Other comprehensive loss (income)	27											27
Net income (loss)	(355)												(355)
Ending balance (in shares) at Jan. 31, 2024				159,835			7,291
Ending balance at Jan. 31, 2024	5,888			$ 0			$ 0		8,724			(6)	(2,830)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net (in shares)				5,710			623
Issuance of common stock, net	74								74
Taxes withheld related to net share settlement of equity awards	(149)								(149)
Conversion of convertible securities (in shares)					105			(105)
Stock-based compensation	570								570
Other comprehensive loss (income)	(6)											(6)
Net income (loss)	28												28
Ending balance (in shares) at Jan. 31, 2025				165,650			7,809
Ending balance at Jan. 31, 2025	$ 6,405			$ 0			$ 0		$ 9,219			$ (12)	$ (2,802)