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Cash and Cash Equivalents
 6 Months Ended
Jun. 30, 2021
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents Cash and Cash Equivalents
The following table details our cash and cash equivalents at June 30, 2021 and December 31, 2020:
(Dollars in millions)June 30, 2021December 31, 2020
Cash and due from banks (1)$23,197 $17,448 
Securities purchased under agreements to resell (2)762 227 
Total cash and cash equivalents$23,959 $17,675 
(1)At June 30, 2021 and December 31, 2020, $16.4 billion and $13.7 billion, respectively, of our cash and due from banks was deposited at the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $5.8 billion and $3.0 billion, respectively.
(2)At June 30, 2021 and December 31, 2020, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of $777 million and $232 million, respectively. None of these securities were sold or repledged as of June 30, 2021 and December 31, 2020.