Short and Long-Term Funding (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Breakdown of short & long-term debt balances

he components of short-term funding (funding with original contractual maturities of one year or less), long-term funding (funding with original contractual maturities greater than one year), and FHLB advances (funding based on original contractual maturities).

	June 30, 2018			December 31, 2017
	($ in Thousands)
Short-Term Funding
Federal funds purchased	$	20,720		$	141,950
Securities sold under agreements to repurchase	183,013			182,865
Federal funds purchased and securities sold under agreements to repurchase	203,733			324,815
Commercial paper	52,791			67,467
Total short-term funding	$	256,525		$	392,282
Long-Term Funding
Senior notes, at par	$	250,000		$	250,000
Subordinated notes, at par	250,000			250,000
Other long-term funding and capitalized costs	(2,381		)	(2,718		)
Total long-term funding	497,619			497,282
Total short and long-term funding, excluding FHLB advances	$	754,144		$	889,564
FHLB Advances
Short-term FHLB advances	$	370,000		$	284,000
Long-term FHLB advances	4,427,857			2,900,168
Total FHLB advances	$	4,797,857		$	3,184,168
Total short and long-term funding	$	5,552,001		$	4,073,732

Remaining contractual maturity of securities sold under agreements to repurchase

The remaining contractual maturity of the securities sold under agreements to repurchase in the consolidated balance sheets as of June 30, 2018 and December 31, 2017 are presented in the following table.

	Remaining Contractual Maturity of the Agreements
	Overnight and Continuous		Up to 30 days		30-90 days		Greater than 90 days		Total
June 30, 2018					($ in Thousands)
Repurchase agreements
Agency mortgage-related securities	$	183,013	$	—	$	—	$	—	$	183,013
Total	$	183,013	$	—	$	—	$	—	$	183,013
December 31, 2017
Repurchase agreements
Agency mortgage-related securities	$	182,865	$	—	$	—	$	—	$	182,865
Total	$	182,865	$	—	$	—	$	—	$	182,865

FHLB_Maturity_ [Table Text Block]

The original contractual maturity or next put date of the Corporation's FHLB advances as of June 30, 2018 and December 31, 2017 are presented in the following table.

	June 30, 2018				December 31, 2017
	Amount		Weighted Average Contractual Coupon Rate		Amount		Weighted Average Contractual Coupon Rate
	($ in Thousands)
Maturity or put date within 1 year	$	2,632,613	1.70	%	$	2,434,000	1.26	%
After 1 but within 2	1,861,040		2.25	%	750,013		1.23	%
After 2 but within 3	291,606		2.60	%	155		4.91	%
After 3 years	12,598		4.55	%	—		—	%
FHLB advances and overall rate	$	4,797,857	1.97	%	$	3,184,168	1.26	%