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Leases - Maturities of Lease Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Operating Leases    
2022 $ 91  
2023 77  
2024 57  
2025 49  
2026 46  
2027 and thereafter 184  
Total lease payments 504  
Less: imputed interest (67)  
Total $ 437 $ 639