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Short-Term Borrowings (Tables)
12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Schedule of Short-term Debt
A summary of short-term borrowings for the years 2023, 2022 and 2021 is presented in the following table:
Table 8.9.1
SHORT-TERM BORROWINGS
(Dollars in millions)Trading LiabilitiesFederal Funds PurchasedSecurities Sold Under Agreements to RepurchaseOther Short-term Borrowings
2023
Average balance$301 $349 $1,426 $2,688 
Year-end balance509 302 1,921 326 
Maximum month-end outstanding509 622 1,957 7,476 
Average rate for the year4.16 %5.12 %3.66 %5.19 %
Average rate at year-end4.48 %5.40 %3.98 %5.36 %
2022
Average balance$480 $699 $881 $229 
Year-end balance335 400 1,013 1,093 
Maximum month-end outstanding700 1,023 1,211 1,093 
Average rate for the year2.56 %1.56 %0.77 %2.26 %
Average rate at year-end3.67 %4.40 %2.19 %4.30 %
2021
Average balance$540 $949 $1,235 $124 
Year-end balance426 775 1,247 102 
Maximum month-end outstanding685 1,037 1,615 146 
Average rate for the year1.11 %0.12 %0.30 %0.09 %
Average rate at year-end1.62 %0.10 %0.11 %0.08 %