Cash and Cash Equivalents

12 Months Ended

Dec. 31, 2016

Cash and Cash Equivalents [Abstract]

Cash and Cash Equivalents

Cash and Cash Equivalents

The following table details our cash and cash equivalents at December 31, 2016 and December 31, 2015:

(Dollars in thousands)	December 31, 2016		December 31, 2015
Cash and due from banks (1)	$	2,476,588	$	1,372,743
Securities purchased under agreements to resell (2)	64,028		125,391
Other short-term investment securities	5,134		5,123
Total cash and cash equivalents	$	2,545,750	$	1,503,257

(1) At December 31, 2016 and 2015, $1.1 billion and $405 million, respectively, of our cash and due from banks was deposited at the FRB and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $721 million and $500 million, respectively.

(2) At December 31, 2016 and 2015, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of $66 million and $128 million, respectively. None of these securities were sold or repledged as of December 31, 2016 and 2015.

Additional information regarding our securities purchased under agreements to resell for 2016 and 2015 are as follows:

	Year Ended December 31,
(Dollars in thousands)	2016		2015
Average securities purchased under agreements to resell	$	90,362	$	75,504
Maximum amount outstanding at any month-end during the year	316,059		338,612