Net Income (Loss) Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Denominator:
Weighted-average shares outstanding, basic (in shares)	176,524	170,217	175,399	168,775
Net income per share, basic (in dollars per share)	$ 0.24	$ 0.09	$ 0.98	$ 0.03
Denominator:
Weighted-average shares outstanding, basic (in shares)	176,524	170,217	175,399	168,775
Weighted-average effect of diluted securities related to:
Number of shares used in diluted calculation	178,402	170,673	179,393	169,768
Net income (loss) per share, diluted (in dollars per share)	$ 0.24	$ 0.00	$ 0.96	$ (0.08)
Class A
Numerator:
Net income, basic	$ 41	$ 15	$ 164	$ 5
Denominator:
Weighted-average shares outstanding, basic (in shares)	168,720	162,681	167,513	161,398
Net income per share, basic (in dollars per share)	$ 0.24	$ 0.09	$ 0.98	$ 0.03
Numerator:
Net income, basic	$ 41	$ 15	$ 164	$ 5
Interest and other	0	(15)	1	(17)
Reallocation of net income as a result of assumed conversion of Class B to Class A common shares	2	0	8	0
Net income (loss), diluted	$ 43	$ 0	$ 173	$ (12)
Denominator:
Weighted-average shares outstanding, basic (in shares)	168,720	162,681	167,513	161,398
Weighted-average effect of diluted securities related to:
Employee share-based awards (in shares)	1,529	0	2,265	0
Convertible senior notes (in shares)	0	456	1,198	993
Assumed conversion of Class B to Class A common shares (in shares)	8,153	0	8,417	0
Number of shares used in diluted calculation	178,402	163,137	179,393	162,391
Net income (loss) per share, diluted (in dollars per share)	$ 0.24	$ 0.00	$ 0.96	$ (0.08)
Class B
Numerator:
Net income, basic	$ 2	$ 1	$ 8	$ 0
Denominator:
Weighted-average shares outstanding, basic (in shares)	7,804	7,536	7,886	7,377
Net income per share, basic (in dollars per share)	$ 0.24	$ 0.09	$ 0.98	$ 0.03
Numerator:
Net income, basic	$ 2	$ 1	$ 8	$ 0
Interest and other	0	(1)	0	(1)
Reallocation of net income as a result of assumed conversion of Class B to Class A common shares	0	0	0	0
Net income (loss), diluted	$ 2	$ 0	$ 8	$ (1)
Denominator:
Weighted-average shares outstanding, basic (in shares)	7,804	7,536	7,886	7,377
Weighted-average effect of diluted securities related to:
Employee share-based awards (in shares)	349	0	531	0
Convertible senior notes (in shares)	0	0	0	0
Assumed conversion of Class B to Class A common shares (in shares)	0	0	0	0
Number of shares used in diluted calculation	8,153	7,536	8,417	7,377
Net income (loss) per share, diluted (in dollars per share)	$ 0.24	$ 0.00	$ 0.96	$ (0.08)