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Goodwill and Other Intangible Assets - Intangible Assets - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]      
Finite-lived intangible assets acquired during the year $ 0 $ 0  
Finite-lived intangible assets, gross 4,000,000 1,000,000  
Finite-Lived intangible assets, net 2,000,000    
Net, intangible asset not subject to amortization 50,000,000 54,000,000  
Gross carrying amount of capitalized software 968,000,000 992,000,000  
Capitalized computer software, net 170,000,000 215,000,000  
Capitalized computer software, development stage costs 82,000,000    
Finite-Lived Intangible Assets, Except Capitalized Internal-Use Software      
Finite Lived Intangible Assets [Line Items]      
Amortization expense $ 1,000,000 1,000,000 $ 1,000,000
Capitalized Internal Use Software, Significant System Conversions      
Finite Lived Intangible Assets [Line Items]      
Weighted-average amortization period 3 years    
Capitalized Internal Use Software      
Finite Lived Intangible Assets [Line Items]      
Amortization expense $ 85,000,000 108,000,000 $ 123,000,000
Amortization expense for 2023 66,000,000    
Amortization expense for 2024 43,000,000    
Amortization expense for 2025 26,000,000    
Acquired finite-lived intangible asset, residual value 0    
Amortization expense for 2026 20,000,000    
Amortization expense for 2027 8,000,000    
Amortization expense thereafter 7,000,000    
Maximum      
Finite Lived Intangible Assets [Line Items]      
Finite-Lived intangible assets, net   $ 1,000,000  
Maximum | Finite-Lived Intangible Assets, Except Capitalized Internal-Use Software      
Finite Lived Intangible Assets [Line Items]      
Amortization expense for 2023 1,000,000    
Amortization expense for 2024 1,000,000    
Amortization expense for 2025 $ 1,000,000