v3.22.0.1
Summary of Significant Accounting Policies - Additional Information (Details)
 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Jan. 01, 2021
USD ($)
Apr. 30, 2020
USD ($)
Aug. 31, 2019
USD ($)
Summary Of Significant Accounting Policies [Line Items]            
Advertising partner arrangement cost $ 679,000,000.0 $ 324,300,000 $ 174,700,000      
Type of Cost, Good or Service [Extensible List] us-gaap:AdvertisingMember us-gaap:AdvertisingMember us-gaap:AdvertisingMember      
Advertising cost $ 62,400,000 $ 29,500,000 $ 31,400,000      
Percentage of tax benefits likelihood of being realized greater than 50%          
Highly liquid investments with original maturities 90 days or less          
Credit losses recorded on available-for-sale debt securities $ 0 $ 0        
Number of operating segment 1 1 1      
Number of reporting unit 1 1 1      
Goodwill impairment charges $ 0 $ 0 $ 0      
Accumulated deficit 8,284,466,000 7,891,542,000        
Additional paid-in capital (12,069,097,000) (10,200,141,000)        
Convertible senior notes, net $ 2,253,087,000 1,675,169,000        
Accounting Standards Update 2020-06            
Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2021          
Change in accounting principle, accounting standards update, early adoption [true false] true          
Change in accounting principle, accounting standards update, transition option elected us-gaap:AccountingStandardsUpdate202006RetrospectiveMember          
Accounting Standards Update 2020-06 | Revision of Prior Period, Accounting Standards Update, Adjustment            
Summary Of Significant Accounting Policies [Line Items]            
Accumulated deficit $ 95,000,000.0     $ 95,000,000.0    
Additional paid-in capital 664,000,000.0     664,000,000.0    
Convertible senior notes, net $ 569,000,000.0     $ 569,000,000.0    
Accounting Standards Update 2021-08            
Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2022          
Change in accounting principle, accounting standards update, early adoption [true false] true          
Change in accounting principle, accounting standards update, immaterial effect [true false] false          
Accounting Standards Update 2020-01            
Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2021          
Change in accounting principle, accounting standards update, immaterial effect [true false] true          
Change in accounting principle, accounting standards update, adopted [true false] true          
Accounting Standards Update 2018-15            
Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2020          
Change in accounting principle, accounting standards update, immaterial effect [true false] true          
Change in accounting principle, accounting standards update, adopted [true false] true          
Accounting Standards Update 2016-13            
Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2020          
Change in accounting principle, accounting standards update, immaterial effect [true false] true          
Change in accounting principle, accounting standards update, adopted [true false] true          
Accounting Standards Update 2019-11            
Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2020          
Change in accounting principle, accounting standards update, immaterial effect [true false] true          
Change in accounting principle, accounting standards update, adopted [true false] true          
2025 Notes            
Summary Of Significant Accounting Policies [Line Items]            
Debt instrument, principal amount $ 284,105,000 1,000,000,000     $ 1,000,000,000.0  
2026 Notes            
Summary Of Significant Accounting Policies [Line Items]            
Debt instrument, principal amount $ 838,493,000 $ 1,265,000,000       $ 1,265,000,000
Computer Hardware, Software and Equipment            
Summary Of Significant Accounting Policies [Line Items]            
Property and equipment estimated useful life 3 years          
Furniture            
Summary Of Significant Accounting Policies [Line Items]            
Property and equipment estimated useful life 5 years          
Minimum | Buildings            
Summary Of Significant Accounting Policies [Line Items]            
Property and equipment estimated useful life 20 years          
Maximum            
Summary Of Significant Accounting Policies [Line Items]            
Business combination measurement period 1 year          
Maximum | Buildings            
Summary Of Significant Accounting Policies [Line Items]            
Property and equipment estimated useful life 45 years          
Prior to February 2018            
Summary Of Significant Accounting Policies [Line Items]            
Service condition satisfied, years 4 years          
RSUs and RSAs Granted after February 2018 | Minimum            
Summary Of Significant Accounting Policies [Line Items]            
Service condition satisfied, years 3 years          
RSUs and RSAs Granted after February 2018 | Maximum            
Summary Of Significant Accounting Policies [Line Items]            
Service condition satisfied, years 4 years          
First Year | Prior to February 2018            
Summary Of Significant Accounting Policies [Line Items]            
Award vesting percentage 10.00%          
Second Year | Prior to February 2018            
Summary Of Significant Accounting Policies [Line Items]            
Award vesting percentage 20.00%          
Third Year | Prior to February 2018            
Summary Of Significant Accounting Policies [Line Items]            
Award vesting percentage 30.00%          
Fourth Year | Prior to February 2018            
Summary Of Significant Accounting Policies [Line Items]            
Award vesting percentage 40.00%          
Class A Common Stock            
Summary Of Significant Accounting Policies [Line Items]            
Common stockholders voting rights no voting rights          
Class B Common Stock            
Summary Of Significant Accounting Policies [Line Items]            
Common stockholders voting rights one vote          
Class C Common Stock            
Summary Of Significant Accounting Policies [Line Items]            
Common stockholders voting rights ten votes