Derivative financial instruments (Tables)

3 Months Ended

Mar. 31, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Information About Interest Rate Swap Agreements

Information about interest rate swap agreements entered into for interest rate risk management purposes summarized by type of financial instrument the swap agreements were intended to hedge follows:

	Notional amount		Average maturity		Weighted- average rate
					Fixed			Variable
	(in thousands)		(in years)
March 31, 2013
Fair value hedges:
Fixed rate long-term borrowings (a)	$	900,000		4.1		6.07	%		1.83	%
December 31, 2012
Fair value hedges:
Fixed rate long-term borrowings (a)	$	900,000		4.4		6.07	%		1.85	%

(a) Under the terms of these agreements, the Company receives settlement amounts at a fixed rate and pays at a variable rate.

Information About Fair Values of Derivative Instruments in Consolidated Balance Sheet

Information about the fair values of derivative instruments in the Company’s consolidated balance sheet and consolidated statement of income follows:

	Asset derivatives				Liability derivatives
	Fair value				Fair value
	March 31, 2013		December 31, 2012		March 31, 2013		December 31, 2012
	(in thousands)
Derivatives designated and qualifying as hedging instruments
Fair value hedges:
Interest rate swap agreements (a)	$	134,306		143,179	$	—		—
Commitments to sell real estate loans (a)		3,255		1,114		3,913		3,825
		137,561		144,293		3,913		3,825
Derivatives not designated and qualifying as hedging instruments
Mortgage-related commitments to originate real estate loans for sale (a)		36,166		48,056		47		197
Commitments to sell real estate loans (a)		1,664		1,982		5,574		6,570
Trading:
Interest rate contracts (b)		351,611		399,963		317,701		365,616
Foreign exchange and other option and futures contracts (b)		10,505		8,725		9,907		8,658
		399,946		458,726		333,229		381,041
Total derivatives	$	537,507		603,019	$	337,142		384,866

(a) Asset derivatives are reported in other assets and liability derivatives are reported in other liabilities.

(b) Asset derivatives are reported in trading account assets and liability derivatives are reported in other liabilities.

Information About Fair Values of Derivative Instruments in Consolidated Statement of Income

	Amount of unrealized gain (loss) recognized
	Three months ended March 31, 2013					Three months ended March 31, 2012
	Derivative			Hedged item		Derivative			Hedged item
	(in thousands)
Derivatives in fair value hedging relationships
Interest rate swap agreements:
Fixed rate long-term borrowings (a)	$	(8,873	)		8,900	$	(7,029	)		6,544
Derivatives not designated as hedging instruments
Trading:
Interest rate contracts (b)	$	968				$	1,139
Foreign exchange and other option and futures contracts (b)		(381	)				(710	)
Total	$	587				$	429

(a) Reported as other revenues from operations.

(b) Reported as trading account and foreign exchange gains.