Goodwill and other intangible assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Total amortizing intangible assets were comprised of the following:

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(In thousands)
December 31, 2015
Core deposit	$	887,459	$	750,624	$	136,835
Other		177,268		173,835		3,433
Total	$	1,064,727	$	924,459	$	140,268
December 31, 2014
Core deposit	$	755,794	$	730,188	$	25,606
Other		177,268		167,847		9,421
Total	$	933,062	$	898,035	$	35,027

Estimated Amortization Expense in Future Years

Estimated amortization expense in future years for such intangible assets is as follows:

	(In thousands)
Year ending December 31:
2016	$	42,185
2017		30,733
2018		23,462
2019		18,026
2020		13,323
Later years		12,539
	$	140,268

Summary of Goodwill Assigned to Reportable Segments for Purposes of Testing for Impairment

A summary of goodwill assigned to each of the Company’s reportable segments as of December 31, 2015 and 2014 for purposes of testing for impairment is as follows.

	December 31		2015			December 31
	2014		Transactions(a)			2015
	(In thousands)
Business Banking	$	748,907	$	115,459		$	864,366
Commercial Banking		907,524		494,349			1,401,873
Commercial Real Estate		349,197		305,192			654,389
Discretionary Portfolio		—		—			—
Residential Mortgage Banking		—		—			—
Retail Banking		1,144,404		164,787			1,309,191
All Other		374,593		(11,300	)		363,293
Total	$	3,524,625	$	1,068,487		$	4,593,112

(a) All increases relate to the acquisition of Hudson City on November 1, 2015. The $11 million decrease in “All Other” represents goodwill allocated to the trade processing business sold in April 2015. Further information related to those transactions is provided in note 2.