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Financing arrangements (Contractual Maturities of Long-term Debt) (Details)
$ in Millions
Dec. 31, 2021
USD ($)
Maturities of Long-term Debt [Abstract]  
2022 $ 0
2023 1,517
2024 1,400
2025 1,500
2026 2,746
Thereafter 27,075
Total $ 34,238