Commitments and contingencies (Tables)

6 Months Ended

Jun. 30, 2017

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.

	June 30,		December 31,
	2017		2016
	(In thousands)
Commitments to extend credit
Home equity lines of credit	$	5,498,513		5,499,609
Commercial real estate loans to be sold		191,825		70,100
Other commercial real estate		5,987,980		6,451,709
Residential real estate loans to be sold		524,540		478,950
Other residential real estate		293,813		232,721
Commercial and other		12,310,082		12,298,473
Standby letters of credit		2,812,772		2,987,091
Commercial letters of credit		30,330		44,723
Financial guarantees and indemnification contracts		3,306,872		3,043,580
Commitments to sell real estate loans		1,091,317		1,489,237