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Short-Term Debt - Summary (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Short term borrowings |  |
Commercial paper | $ 5,612 | $ 4,654
Notes payable to banks and others with originating terms of one year or less | 15 | 228
Current maturities of long-term debt | 2,600 | 5,054
Current maturities of long-term finance leases | 186 | 18
Redeemable long term obligations - Long-term debt | 2,960 | 3,078
Subtotal | 11,373 | 13,032
Reclassified to long-term debt | (9,825) | (9,750)
Total short-term debt | $ 1,548 | $ 3,282
Weighted-average interest rate | 0.15% | 1.69%

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