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Share-Based Compensation Expense - Additional Information (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Dec. 31, 2021
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Performance-based RSUs [Member]          
Class Of Stock [Line Items]          
Aggregate grant date fair value $ 115        
Total future compensation expense 156   $ 156    
Remaining weighted-average amortization period     2 years 2 months 12 days    
RSUs [Member]          
Class Of Stock [Line Items]          
Aggregate grant date fair value 119        
Total future compensation expense 84   $ 84    
Remaining weighted-average amortization period     1 year 7 months 6 days    
RSUs and PRSUs[Member]          
Class Of Stock [Line Items]          
Share-based compensation $ 67 $ 5   $ 5 $ 9
2021 Omnibus Incentive Plan | Time-based RSUs [Member]          
Class Of Stock [Line Items]          
Vesting period 3 years        
Percentage of units granted subject to vesting requirements 50.00%   50.00%    
2021 Omnibus Incentive Plan | Performance-based RSUs [Member]          
Class Of Stock [Line Items]          
Percentage of units granted subject to vesting requirements 50.00%   50.00%