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Short-Term Borrowings
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Short-Term Borrowings Short-Term Borrowings
A summary of short-term borrowings for the years 2021, 2020 and 2019 is presented in the following table:
Table 8.10.1
SHORT-TERM BORROWINGS
(Dollars in millions)Trading LiabilitiesFederal Funds PurchasedSecurities Sold Under Agreements to RepurchaseOther Short-term Borrowings
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 %
2020
Average balance$457 $862 $1,109 $626 
Year-end balance353 845 1,187 166 
Maximum month-end outstanding983 1,487 1,661 4,061 
Average rate for the year1.24 %0.34 %0.50 %0.84 %
Average rate at year-end0.77 %0.10 %0.26 %0.09 %
2019
Average balance$503 $738 $701 $538 
Year-end balance506 548 717 2,253 
Maximum month-end outstanding754 1,282 772 2,276 
Average rate for the year2.48 %2.08 %2.07 %2.10 %
Average rate at year-end2.07 %1.55 %1.72 %2.14 %
Federal funds purchased and securities sold under agreements to repurchase generally have maturities of less than 90 days. Trading liabilities, which represent short positions in securities, are generally held for less than 90 days. Other short-term borrowings have original
maturities of one year or less. On December 31, 2021, fixed income trading securities with a fair value of $33 million were pledged to secure other short-term borrowings.