Commitments and contingencies (Tables)

9 Months Ended

Sep. 30, 2016

Commitments And Contingencies Disclosure [Abstract]

Company's Significant Commitments

The following table presents the Company's significant commitments.  Certain of these commitments are not included in the Company's consolidated balance sheet.

	September 30,		December 31,
	2016		2015
	(in thousands)
Commitments to extend credit
Home equity lines of credit	$	5,525,814		5,631,680
Commercial real estate loans to be sold		403,411	57,597
Other commercial real estate		6,365,999		5,949,933
Residential real estate loans to be sold		635,661		488,621
Other residential real estate		297,191		212,619
Commercial and other		12,219,005		11,802,850
Standby letters of credit		3,283,270		3,330,013
Commercial letters of credit		50,109		55,559
Financial guarantees and indemnification contracts		3,147,784		2,794,322
Commitments to sell real estate loans		1,538,900		782,885