Cash and Cash Equivalents (Tables)

6 Months Ended

Jun. 30, 2015

Cash and Cash Equivalents [Abstract]

Cash and Cash Equivalents

The following table details our cash and cash equivalents at June 30, 2015 and December 31, 2014:

(Dollars in thousands)	June 30, 2015		December 31, 2014
Cash and due from banks (1)	$	2,281,816	$	1,694,329
Securities purchased under agreements to resell (2)	338,612		95,611
Other short-term investment securities	5,122		6,122
Total cash and cash equivalents	$	2,625,550	$	1,796,062

(1) At June 30, 2015 and December 31, 2014, $1.4 billion and $861 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 $557 million and $440 million, respectively.

(2) At June 30, 2015 and December 31, 2014, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of $345 million and $98 million, respectively. None of these securities received as collateral were sold or pledged as of June 30, 2015 or December 31, 2014.