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Stockholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2022
Stockholders' Equity Note [Abstract]  
Summary of Activity Related to Stock Option Plans
A summary of the activities related to the Company’s stock option plans is as follows:
Options Outstanding
Shares
Available
for Grant		Number of
Shares		Weighted-
Average
Exercise Price
(per share)
Balances as of December 31, 202120,145,360 17,595,851 $219.83 
Granted
(2,812,627)2,812,627 265.11
Exercised
— (1,057,387)26.26 
Expired
— (4,871)11.35 
Balances as of September 30, 202217,332,733 19,346,220 $237.05 
Summary of Amounts Related to Option Exercises
A summary of the amounts related to option exercises, is as follows:
Three Months EndedNine Months Ended
September 30,
2022		September 30,
2021		September 30,
2022		September 30,
2021
(in thousands)
Total intrinsic value of options exercised$65,087 $263,507 $262,879 $581,817 
Cash received from options exercised4,113 18,445 29,041 86,265 
Summary of Assumptions Used to Value Stock Option Grants Using Lattice-Binomial Model The following table summarizes the assumptions used to value option grants using the lattice-binomial model and the valuation data:
Three Months EndedNine Months Ended
September 30,
2022		September 30,
2021		September 30,
2022		September 30,
2021
Dividend yield— %— %— %— %
Expected volatility50 %34 %
38% - 50%
34% - 41%
Risk-free interest rate2.98 %1.37 %
1.71% - 2.98%
1.08% - 1.62%
Suboptimal exercise factor4.73 3.85 
4.71 - 4.73
3.81 - 3.85
Weighted-average fair value (per share)$127 $240 $150 $250 
Total stock-based compensation expense (in thousands)$152,062 $95,078 $421,663 $303,891 
Total income tax impact on provision (in thousands)$33,724 $21,443 $93,472 $68,354