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Goodwill and Other Intangible Assets - Definite-lived Intangible Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Definite-lived Intangible assets      
Gross Carrying Amount $ 953 $ 951  
Accumulated Amortization (691) (653)  
Net Carrying Amount 262 298  
Aggregate amortization expense for definite-lived intangible assets 56 52 $ 45
Impairments of finite-lived intangible assets 8 1 $ 0
Estimated future intangible amortization expense      
2025 53    
2026 48    
2027 36    
2028 26    
2029 22    
Customer relationships      
Definite-lived Intangible assets      
Gross Carrying Amount 370 380  
Accumulated Amortization (204) (191)  
Net Carrying Amount 166 189  
Contracts      
Definite-lived Intangible assets      
Gross Carrying Amount 226 228  
Accumulated Amortization (218) (219)  
Net Carrying Amount 8 9  
Other      
Definite-lived Intangible assets      
Gross Carrying Amount 357 343  
Accumulated Amortization (269) (243)  
Net Carrying Amount $ 88 $ 100