Commitments and contingencies (Tables)

3 Months Ended

Mar. 31, 2018

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.

	March 31,		December 31,
	2018		2017
	(In thousands)
Commitments to extend credit
Home equity lines of credit	$	5,518,820		5,482,622
Commercial real estate loans to be sold		288,883		194,763
Other commercial real estate		5,788,080		6,050,569
Residential real estate loans to be sold		343,400		347,113
Other residential real estate		223,589		201,426
Commercial and other		12,951,589		12,733,815
Standby letters of credit		2,477,474		2,497,844
Commercial letters of credit		56,245		46,739
Financial guarantees and indemnification contracts		3,449,447		3,434,381
Commitments to sell real estate loans		977,257		812,217