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Debt and Borrowing Arrangements - Aggregate Maturities of Debt and Finance Leases (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Debt Disclosure [Abstract]  
2021 $ 2,750
2022 2,851
2023 1,705
2024 1,667
2025 1,465
Thereafter 9,693
Total $ 20,131