Stockholders' Equity and Equity Incentive Plans - Additional Information (Details)		1 Months Ended	12 Months Ended			60 Months Ended
	Nov. 30, 2018 vote $ / shares shares	Apr. 30, 2019 USD ($) period $ / shares shares	Jan. 31, 2026 USD ($) $ / shares shares	Jan. 31, 2025 USD ($) $ / shares shares	Jan. 31, 2024 USD ($) shares	Jan. 31, 2025 $ / shares shares	Nov. 30, 2025 USD ($)	Nov. 30, 2024 USD ($)	Feb. 29, 2024 USD ($)	Jan. 31, 2020 shares
Class of Stock [Line Items]
Common stock, conversion features, term (in months)	6 months
Initial offering period (in years)	15 years
Common stock, par value (in dollars per share) | $ / shares			$ 0.001	$ 0.001		$ 0.001
Remaining authorized repurchase amount | $			$ 1,000,000,000.0
Shares granted (in shares)			0	0	0
Aggregate intrinsic value, exercised | $			$ 66,978,000	$ 62,100,000	$ 90,000,000.0
Unrecognized stock-based compensation expenses related to outstanding unvested stock options (in shares) | $			$ 0
Number of shares available for future issuance (in shares)			110,561,776	103,407,268		103,407,268
Number of purchase periods | period		4
Non-cash charge for donated shares | $			$ 20,904,000	$ 0	$ 0
RSUs
Class of Stock [Line Items]
Unrecognized stock-based compensation expenses | $			$ 1,391,300,000
Unrecognized stock-based compensation excepted to be recognized over a weighted-average period (in years)			2 years 9 months 18 days
Number of shares available for future issuance (in shares)			20,106,305	23,870,513		23,870,513
ESPP
Class of Stock [Line Items]
Unrecognized stock-based compensation expenses | $			$ 15,500,000
Unrecognized stock-based compensation excepted to be recognized over a weighted-average period (in years)			1 year 1 month 6 days
Number of shares available for future issuance (in shares)			1,293,529	2,311,567		2,311,567
Maximum number of shares per employee (in shares)		3,000
Consecutive offering period (in months)		27 months
2019 Plan
Class of Stock [Line Items]
Vesting period of awards (in years)		4 years
Maximum term (in years)		10 years
Shares reserved for issuance (as a percent)		5.00%
2019 Employee Stock Purchase Plan | ESPP
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)			20,664,260	18,807,595		18,807,595
Percent of outstanding stock, maximum (as a percent)		1.00%
Number of additional shares allowable under the plan (in shares)		7,500,000
Class A
Class of Stock [Line Items]
Common stock number of votes per share | vote	1
Common stock, conversion basis (in shares)	1
Common stock, shares authorized (in shares)	320,000,000	2,000,000,000	2,000,000,000	2,000,000,000		2,000,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
Stock repurchase program, amount authorized | $									$ 1,500,000,000
Stock repurchase program, additional amount authorized | $							$ 1,000,000,000.0	$ 1,200,000,000
Stock repurchased and retired (in shares)			20,385,361
Stock repurchased and retired | $			$ 1,600,000,000
Issuance of shares approved to be transferred to nonprofit organizations (in shares)			164,192							500,000
Shares transferred to nonprofit organizations (in shares)			240,964			94,844
Class A | ESPP
Class of Stock [Line Items]
Percentage of purchase price of common stock to fair market value of common stock on offering or purchase date (as a percent)		85.00%
ESPP excess rate purchase right, value | $		$ 25,000
Shares issued of common stock (in shares)			1,200,743	1,066,977	921,892
Class A | 2019 Plan
Class of Stock [Line Items]
Number of shares authorized (in shares)		58,300,889
Number of additional shares authorized under the plan (in shares)		34,000,000
Class A | 2011 Plan
Class of Stock [Line Items]
Other shares authorized (in shares)		24,300,889
Class A | 2019 Employee Stock Purchase Plan | ESPP
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)		9,000,000
Class B
Class of Stock [Line Items]
Common stock number of votes per share | vote	10
Common stock, conversion basis (in shares)	1
Common stock, shares authorized (in shares)	300,000,000	300,000,000	300,000,000	300,000,000		300,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001