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Leases - Future Payments Under Operating Lease Arrangements (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Leases [Abstract]    
2022 $ 145  
2023 116  
2024 83  
2025 44  
2026 26  
Thereafter 27  
Total operating lease payments, undiscounted 441  
Less: present value discount 27  
Lease liability, at present value $ 414 $ 414