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Basis of Presentation and Significant Accounting Policies Additional Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Derivative [Line Items]        
Stockholders' Equity Attributable to Noncontrolling Interest $ 60,000,000   $ 60,000,000  
Preferred Stock, Shares Issued 0      
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest $ 0 $ 0    
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest 0 0    
Noncontrolling Interest, Change in Redemption Value $ 0 $ (13,000,000)    
Business Acquisition, Percentage of Voting Interests Acquired     80.00%  
Business Combination, Redeemable Noncontrolling Percentage     20.00%  
Number of Variable Interest Entities Consolidated During the Period 2 0    
Xchange        
Derivative [Line Items]        
Redeemable Noncontrolling Interest, Equity, Carrying Amount     $ 18,000,000 $ 7,000,000
Redeemable Noncontrolling Interest, Equity, Redemption Value $ 18,000,000 $ 20,000,000    
Retained Earnings [Member]        
Derivative [Line Items]        
Noncontrolling Interest, Change in Redemption Value $ 0 $ (13,000,000)