Cash and Cash Equivalents (Tables)

3 Months Ended

Mar. 31, 2017

Cash and Cash Equivalents [Abstract]

Cash and Cash Equivalents

The following table details our cash and cash equivalents at March 31, 2017 and December 31, 2016:

(Dollars in thousands)	March 31, 2017		December 31, 2016
Cash and due from banks (1)	$	3,612,954	$	2,476,588
Securities purchased under agreements to resell (2)	178,037		64,028
Other short-term investment securities	4,688		5,134
Total cash and cash equivalents	$	3,795,679	$	2,545,750

(1) At March 31, 2017 and December 31, 2016, $2.4 billion and $1.1 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 $773 million and $721 million, respectively.

(2) At March 31, 2017 and December 31, 2016, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of$182 millionand $66 million, respectively. None of these securities were sold or repledged as of March 31, 2017 and December 31, 2016.