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Long-Term Debt and Short-Term Borrowings - Future Maturities of Long-term Debt (Details)
$ in Millions
Sep. 30, 2021
USD ($)
Maturities of long-term debt  
Remainder of 2021 $ 754
2022 1,253
2023 1,942
2024 1,100
2025 1,792
2026 1,511
After 2026 9,797
Total $ 18,149