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Convertible Senior Notes - Additional Information (Details)
1 Months Ended 2 Months Ended 3 Months Ended
Jan. 20, 2023
day
Jan. 31, 2020
USD ($)
Jul. 31, 2018
USD ($)
day
Jan. 31, 2024
USD ($)
day
$ / shares
Jul. 31, 2021
USD ($)
Jan. 31, 2021
USD ($)
Jul. 31, 2020
USD ($)
Jan. 14, 2020
USD ($)
Jul. 31, 2019
USD ($)
Jun. 30, 2018
USD ($)
Debt Instrument [Line Items]                    
Proceeds from borrowings on convertible senior notes, net of issuance costs   $ 1,130,000,000                
Convertible debt, conversion ratio   4.7349                
Convertible debt, conversion ratio denominator         $ 1,000   $ 1,000      
Initial conversion price (in dollars per share) | $ / shares       $ 211.20            
2026 Notes                    
Debt Instrument [Line Items]                    
Fair value of convertible debt       $ 2,200,000,000            
Redemption Period 1                    
Debt Instrument [Line Items]                    
Consecutive threshold trading days | day 30   30 30            
Threshold percentage of stock price trigger 130.00%   130.00% 130.00%            
Redemption Period 1 | Minimum                    
Debt Instrument [Line Items]                    
Threshold trading days | day 20   20 20            
Redemption Period 2                    
Debt Instrument [Line Items]                    
Convertible debt, conversion ratio denominator         $ 1,000          
Threshold trading days | day     5              
Consecutive threshold trading days | day     5              
Redemption Period 2 | Maximum                    
Debt Instrument [Line Items]                    
Trading price as a percentage of stock price and debt conversion rate         98.00%          
Convertible Debt                    
Debt Instrument [Line Items]                    
Face amount of debt               $ 90,000,000 $ 50,000,000 $ 250,000,000
Interest rate                 0.75% 0.75%
Proceeds from borrowings on convertible senior notes, net of issuance costs     $ 291,100,000              
Convertible debt, conversion ratio denominator       $ 100            
Percentage of principal amount redeemed 100.00%   100.00%              
Convertible Debt | 2026 Notes                    
Debt Instrument [Line Items]                    
Face amount of debt           $ 1,000,000,000        
Interest rate           0.25%        
Convertible Debt | Additional Convertible Senior Notes Due 2026                    
Debt Instrument [Line Items]                    
Face amount of debt           $ 150,000,000        
Convertible Debt | 2024 Notes Partial Repurchase                    
Debt Instrument [Line Items]                    
Face amount of debt               $ 210,000,000