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Commitments and Contingencies - Narrative (Details)
$ in Millions
1 Months Ended 12 Months Ended
Nov. 30, 2021
customer
member
Apr. 30, 2020
customer
lawsuit
Jan. 31, 2020
securityAdvisor
Nov. 30, 2018
subclass
Aug. 31, 2017
individual
Dec. 31, 2021
USD ($)
thirdParty
Dec. 31, 2020
USD ($)
Jan. 31, 2018
claim
Loss Contingencies [Line Items]                
Number of distinct third parties | thirdParty           2    
Other commitment | $           $ 100    
Loss contingency accrual | $           90 $ 89  
Number of certified subclasses | subclass       4        
Loss Contingency, Number of Plaintiffs     7   2      
Number of customer's account | customer   200            
Number of customer | customer 7              
Number of members of respective households | member 14              
Shareholder Litigation                
Loss Contingencies [Line Items]                
Loss contingency, pending claims, number | claim               5
Unauthorized Access Litigation                
Loss Contingencies [Line Items]                
Loss contingency, pending claims, number   7            
Unauthorized Access Litigation | Putative Class Actions                
Loss Contingencies [Line Items]                
Loss contingency, pending claims, number   4            
Unauthorized Access Litigation | Individual Claims                
Loss Contingencies [Line Items]                
Loss contingency, pending claims, number   4            
Unauthorized Access Litigation | Individual Claims Settled                
Loss Contingencies [Line Items]                
Loss contingency, pending claims, number   1            
Unauthorized Access Litigation | Putative Class Actions Settled                
Loss Contingencies [Line Items]                
Loss contingency, pending claims, number   1            
Google | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                
Loss Contingencies [Line Items]                
Collaborative arrangement, future milestone contributions | $           $ 150