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Subsequent Event (Details) - USD ($)
 9 Months Ended 14 Months Ended
Sep. 30, 2020
Dec. 31, 2021
Nov. 02, 2020
Workforce Reduction Plan | Minimum | Subsequent Event      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     $ 70,000,000
Workforce Reduction Plan | Minimum | Subsequent Event | Employee Severance and Other Employee-related Costs      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     16,000,000
Workforce Reduction Plan | Minimum | Subsequent Event | Facilities Lease Related Cost      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     11,000,000
Workforce Reduction Plan | Minimum | Subsequent Event | Outside Services, Legal and Other Associated Costs      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     11,000,000
Workforce Reduction Plan | Minimum | Subsequent Event | Scenario, Forecast      
Subsequent Event [Line Items]      
Cash payments for restructuring   $ 75,000,000  
Workforce Reduction Plan | Minimum | Subsequent Event | Non-us | Scenario, Forecast | Employee      
Subsequent Event [Line Items]      
Cash payments for restructuring   15,000,000  
Workforce Reduction Plan | Maximum | Subsequent Event      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     80,000,000
Workforce Reduction Plan | Maximum | Subsequent Event | Employee Severance and Other Employee-related Costs      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     18,000,000
Workforce Reduction Plan | Maximum | Subsequent Event | Facilities Lease Related Cost      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     12,000,000
Workforce Reduction Plan | Maximum | Subsequent Event | Outside Services, Legal and Other Associated Costs      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     13,000,000
Workforce Reduction Plan | Maximum | Subsequent Event | Scenario, Forecast      
Subsequent Event [Line Items]      
Cash payments for restructuring   85,000,000  
Workforce Reduction Plan | Maximum | Subsequent Event | Non-us | Scenario, Forecast | Employee      
Subsequent Event [Line Items]      
Cash payments for restructuring   $ 18,000,000  
Voluntary Separation Program      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges $ 32,000,000    
Cash payments for restructuring $ 0    
Voluntary Separation Program | Minimum | Subsequent Event | Employee Severance and Other Employee-related Costs      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     32,000,000
Voluntary Separation Program | Maximum | Subsequent Event | Employee Severance and Other Employee-related Costs      
Subsequent Event [Line Items]      
Estimated reorganization costs and charges     $ 37,000,000