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Stock-Based Compensation - Valuation Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Employee stock options
Valuation Assumptions
Expected volatility, low end of range		61.60%	42.90%
Expected volatility, high end of range			61.50%
Risk-free interest rate, low end of range		3.30%	0.10%
Risk-free interest rate, high end of range			1.40%
Dividend rate		0.00%	0.00%
ESPP
Valuation Assumptions
Expected term (in years)	6 months	6 months	6 months
Expected volatility, low end of range	45.80%	73.20%	46.40%
Expected volatility, high end of range	57.10%	97.30%	58.70%
Risk-free interest rate, low end of range	5.30%	1.50%	0.00%
Risk-free interest rate, high end of range	5.40%	4.50%	0.10%
Dividend rate	0.00%	0.00%	0.00%
Minimum | Employee stock options
Valuation Assumptions
Fair value of common stock (in dollars per share)		$ 85.17	$ 268.55
Expected term (in years)		6 years 7 days	3 months 18 days
Minimum | ESPP
Valuation Assumptions
Fair value of common stock (in dollars per share)	$ 47.36	$ 50.81	$ 297.20
Maximum | Employee stock options
Valuation Assumptions
Fair value of common stock (in dollars per share)			$ 409.21
Expected term (in years)			6 years 4 months 20 days
Maximum | ESPP
Valuation Assumptions
Fair value of common stock (in dollars per share)	$ 61.55	$ 99.68	$ 310.80

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- Definition

Fair value of common stock per share during the period.

+ References

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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