Share-based Compensation - Narrative (Details)
1 Months Ended 12 Months Ended
Dec. 16, 2013
shares
Apr. 30, 2019
USD ($)
shares
Dec. 31, 2021
USD ($)
Vote
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Sep. 30, 2021
shares
Jan. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Aug. 08, 2014
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Options outstanding (in shares) | shares     32,708,847 39,614,883 38,011,964 32,708,847   33,660,957  
Number of employees with options granted that include repurchase obligations | Vote     3            
Payments for repurchases of share options   $ 1,600,000              
Aggregate intrinsic value, outstanding     $ 127,168,263 $ 466,460,320 $ 51,303,638   $ 51,300,000 $ 19,994,575  
Fair value of options vested in period     12,000,000.0 4,900,000 2,300,000        
Share-based compensation     $ 31,481,000 $ 11,974,000 $ 4,253,000        
Number of awards to be released not subject to performance metrics, as a percent       70.00%          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ / shares     $ 0.14 $ 0.17 $ 0.12     $ 0.11  
Minimum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)     2 years            
Awards to be released as a percent of target, percent     0.00% 0.00%          
Maximum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)     10 years            
Awards to be released as a percent of target, percent     60.00% 30.00%          
Founder-Controlled Entities                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Restricted shares granted (in shares) | shares 5,000,000                
Equity Option                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized share based compensation expense, share options, period for recognition (in years)     2 years 4 months 24 days 1 year 6 months          
Equity award – share options                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation, expiration period     10 years            
Share-based payment arrangement, additional expense     $ 800,000            
Share-based compensation     16,700,000 $ 7,200,000 $ 3,100,000        
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount     $ 71,400,000 $ 31,000,000.0          
Restricted Shares                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)     4 years 3 years          
Share-based payment arrangement, additional expense     $ 100,000            
Share-based compensation     $ 2,700,000 $ 300,000 300,000        
Unrecognized share based compensation expense, share options, period for recognition (in years)     1 year 6 months 2 years          
Number of awards to be released not subject to performance metrics, as a percent     40.00%            
Unrecognized share based compensation expenses related to restricted shares     $ 2,200,000 $ 4,900,000          
Restricted Shares | VoiceCrew Holdings Limited                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Restricted shares granted (in shares) | shares 30,800,000                
Restricted Shares | Sounds of Nature Limited                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Restricted shares granted (in shares) | shares 77,000,000                
Restricted Shares | Management                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)     4 years            
Restricted shares granted (in shares) | shares 15,000,000                
Number of shares granted with repurchase obligations (in shares) | shares               500,000  
Shares repurchased during period (in shares) | shares   100,000              
Stock repurchases, consideration   $ 100,000              
Shares granted with repurchase obligations waived (in shares) | shares   400,000              
Restricted Shares | Management | VoiceCrew Holdings Limited                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Restricted shares granted (in shares) | shares 15,000,000                
Restricted Shares | Vest upon the first anniversary of stated commencement date | Management                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting rights, percentage 25.00%   25.00%            
Restricted shares granted (in shares) | shares 10,000,000                
Restricted Shares | Vest upon the first anniversary of stated commencement date | Founder-Controlled Entities                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting rights, percentage 25.00%                
Restricted Shares | Vest after the first anniversary of stated commencement date | Management                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation, expiration period     36 months            
Award vesting period (in years) 36 months                
Restricted Shares | Vest after the first anniversary of stated commencement date | Founder-Controlled Entities                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years) 36 months                
Restricted Shares Subject To Performance Metrics                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of awards subject to performance metrics, percent     60.00% 30.00%          
Restricted Shares Subject To Performance Metrics | Minimum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)     1 year 1 year          
Restricted Shares Subject To Performance Metrics | Maximum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)     5 years 3 years          
Restricted Stock Units (RSUs)                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation     $ 5,588,000 $ 136,000 0        
Unrecognized share based compensation expense, share options, period for recognition (in years)     4 years 4 months 24 days 1 year 9 months 18 days          
Restricted shares granted (in shares) | shares     4,106,498 263,621          
Unrecognized share based compensation expenses related to restricted shares     $ 25,800,000 $ 2,600,000          
Restricted Stock Units (RSUs) | Minimum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)     2 years            
Restricted Stock Units (RSUs) | Maximum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)     6 years            
Restricted Stock Units (RSUs) | Management                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation     $ 700,000 900,000 $ 800,000        
2014 Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Common shares reserved for future issuance (in shares) | shares                 20,000,000
Share-based compensation arrangement, shares authorized (in shares) | shares         34,613,165        
2018 Plan | Agora IO, Inc                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Common shares reserved for future issuance (in shares) | shares             25,740,835    
2018 Plan | Restricted Stock Units (RSUs)                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation       100,000        
VPP shares – weighted average                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation     $ 5,800,000 $ 3,500,000          
VPP shares – weighted average | Equity award – share options                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ / shares     $ 0            
Share based payment arrangement, Nonvested award, Cost not yet recognized, Amount     $ 0