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Short-Term Debt (Tables)
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Short-Term Debt
At December 31
20212020
Commercial paper1
$ $5,612 
Notes payable to banks and others with originating terms of one year or less
62 15 
Current maturities of long-term debt4,946 2,600 
Current maturities of long-term finance leases
48 186 
Redeemable long-term obligations2,959 2,960 
Subtotal
8,015 11,373 
Reclassified to long-term debt(7,759)(9,825)
Total short-term debt$256 $1,548 
1    Weighted-average interest rate at December 31, 2020 was 0.15%.