Cash and Cash Equivalents

3 Months Ended

Mar. 31, 2018

Cash and Cash Equivalents [Abstract]

Cash and Cash Equivalents

5. Cash and Cash Equivalents

The following table details our cash and cash equivalents at March 31, 2018 and December 31, 2017:

(Dollars in thousands)	March 31, 2018		December 31, 2017
Cash and due from banks (1)	$	2,241,287	$	2,672,290
Securities purchased under agreements to resell (2)	375,180		247,876
Other short-term investment securities	2,917		2,909
Total cash and cash equivalents	$	2,619,384	$	2,923,075

(1) At March 31, 2018 and December 31, 2017, $378.2 million and $624.0 million, 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 both $1.1 billion at March 31, 2018 and December 31, 2017.

(2) At March 31, 2018 and December 31, 2017, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of$382.7 millionand $252.8 million, respectively. None of these securities were sold or repledged as of March 31, 2018 and December 31, 2017.