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Loans, borrowings, leases, cash and cash equivalents and short-term investments - Debt payments (Details)
$ in Millions
Dec. 31, 2021
USD ($)
Loans and borrowings  
Principal $ 12,022
Estimated future interest payments 6,390
2022  
Loans and borrowings  
Principal 872
Estimated future interest payments 600
2023  
Loans and borrowings  
Principal 289
Estimated future interest payments 564
2024.  
Loans and borrowings  
Principal 2,004
Estimated future interest payments 539
2025.  
Loans and borrowings  
Principal 145
Estimated future interest payments 510
Between 2026 and 2029  
Loans and borrowings  
Principal 2,455
Estimated future interest payments 2,049
2031 onwards  
Loans and borrowings  
Principal 6,257
Estimated future interest payments $ 2,128