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Equity Incentive Plans - Additional Information (Detail)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Mar. 31, 2018
USD ($)
Milestone
tranche
shares
Dec. 31, 2023
USD ($)
tranche
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Contractual term of stock options, in years   10 years    
Aggregate intrinsic value of options exercised   $ 1,330.0 $ 1,900.0 $ 26,880.0
Percentage of payroll deductions of employees eligible compensation   15.00%    
Percentage of discount on purchase price of shares lower than fair market value   85.00%    
Number of shares issued under ESPP (in shares) | shares   2,100,000 1,400,000 1,500,000
Stock-based compensation   $ 1,812.0 $ 1,560.0 $ 2,121.0
Unrecognized compensation expense   $ 4,820.0    
Weighted-average period of recognition of unrecognized compensation, in years   2 years 9 months 18 days    
Excess tax benefits related to stock-based compensation   $ 326.0 0.0 0.0
Stock-based compensation expense capitalized   199.0 $ 245.0 $ 182.0
Employee Stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Value of shares available for issuance under ESPP   $ 97.8    
2019 Equity Incentive Plan        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Shares reserved for issuance (in shares) | shares   131,100,000    
Granted (in shares) | shares   9,521,000    
Restricted Stock Units (RSUs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Granted (in dollars per share) | $ / shares   $ 228.33 $ 239.85 $ 261.33
Aggregate fair value   $ 2,500.0 $ 4,320.0 $ 5,700.0
Restricted Stock Units (RSUs) | 2019 Equity Incentive Plan        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Granted (in dollars per share) | $ / shares   $ 228.33    
Granted (in shares) | shares   11,743,000    
2012 CEO Performance Award        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Remaining, vested option       23,450.0
2018 CEO Performance Award | Chief Executive Officer        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Granted (in shares) | shares 304,000,000      
Number of vesting tranches CEO Performance Award consists | tranche 12 12    
Increase to market capitalization for each remaining milestone $ 50,000.0      
Number of operational milestones focused on total revenue | Milestone 8      
Number of operational milestones focused on adjusted EBITDA | Milestone 8      
Payment of exercise price per share (in dollars per share) | $ / shares   $ 23.34    
Holding period of shares post-exercise 5 years      
Stock-based compensation     66.0 $ 910.0
2018 CEO Performance Award | Chief Executive Officer | First Tranche Milestone        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Market capitalization $ 100,000.0      
Employee Stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period, in years   6 months    
Offering period   6 months    
Performance Based Restricted Stock Units And Stock Options        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-based compensation   $ 57.0 $ 159.0  
Granted (in shares) | shares   5,300,000    
Unrecognized compensation expense   $ 655.0    
Probable of achievement, cost not yet recognized, amount   $ 110.0    
Weighted-average period of recognition of unrecognized compensation, in years   4 years    
Maximum | Restricted Stock Units (RSUs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period, in years   4 years