Segment information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Summary of Prior Period Financial Information Restated

Accordingly, financial information presented herein for 2014 and 2013 have been restated to reflect those changes to provide segment information on a comparable basis, as noted in the following tables.

	Year ended December 31, 2014
	Net income (loss) as previously reported			Impact of changes			Net income (loss) as restated
	(in thousands)
Business Banking	$	119,809		$	(20,539	)	$	99,270
Commercial Banking		411,139			(8,211	)		402,928
Commercial Real Estate		316,129			(169	)		315,960
Discretionary Portfolio		48,098			245			48,343
Residential Mortgage Banking		95,006			(10,464	)		84,542
Retail Banking		119,916			153,442			273,358
All Other		(43,851	)		(114,304	)		(158,155	)
Total	$	1,066,246		$	—		$	1,066,246
	Year ended December 31, 2013
	Net income (loss) as previously reported			Impact of changes			Net income (loss) as restated
	(in thousands)
Business Banking	$	111,040		$	(9,975	)	$	101,065
Commercial Banking		391,340			16,053			407,393
Commercial Real Estate		321,793			7,493			329,286
Discretionary Portfolio		29,968			2,268			32,236
Residential Mortgage Banking		99,392			(7,069	)		92,323
Retail Banking		182,401			138,549			320,950
All Other		2,546			(147,319	)		(144,773	)
Total	$	1,138,480		$	—		$	1,138,480

Information about Company's Segments

Information about the Company’s segments is presented in the accompanying table. Income statement amounts are in thousands of dollars. Balance sheet amounts are in millions of dollars.

	For the Years Ended December 31, 2015, 2014 and 2013
	Business Banking						Commercial Banking						Commercial Real Estate								Discretionary Portfolio
	2015		2014		2013		2015		2014		2013		2015			2014			2013		2015		2014		2013
Net interest income(a)	$	338,855	$	345,773	$	365,786	$	753,604	$	746,344	$	785,987	$	577,922		$	555,358		$	590,009	$	86,083	$	74,204	$	69,020
Noninterest income		108,195		105,149		102,613		290,142		254,295		263,925		142,948			125,087			130,833		28,114		27,464		(3,824	)
		447,050		450,922		468,399		1,043,746		1,000,639		1,049,912		720,870			680,445			720,842		114,197		101,668		65,196
Provision for credit losses		15,513		18,883		26,550		25,089		33,213		76,791		(8,003	)		(7,339	)		6,613		7,599		16,547		17,129
Amortization of core deposit and other intangible assets		—		—		—		—		—		—		—			—			—		—		—		—
Depreciation and other amortization		407		405		198		566		588		564		19,247			16,300			14,314		679		891		1,330
Other noninterest expense		264,163		263,734		270,759		288,303		284,091		289,582		169,688			169,039			173,345		49,839		33,522		27,313
Income (loss) before taxes		166,967		167,900		170,892		729,788		682,747		682,975		539,938			502,445			526,570		56,080		50,708		19,424
Income tax expense (benefit)		68,209		68,630		69,827		298,758		279,819		275,582		199,297			186,485			197,284		3,654		2,365		(12,812	)
Net income (loss)	$	98,758	$	99,270	$	101,065	$	431,030	$	402,928	$	407,393	$	340,641		$	315,960		$	329,286	$	52,426	$	48,343	$	32,236
Average total assets (in millions)	$	5,339	$	5,278	$	5,107	$	24,143	$	22,860	$	21,710	$	18,827		$	17,405		$	17,305	$	26,648	$	20,798	$	16,630
Capital expenditures (in millions)	$	—	$	2	$	1	$	—	$	—	$	—	$	—		$	—		$	—	$	—	$	—	$	—

										For the Years Ended December 31, 2015, 2014 and 2013
	Residential Mortgage Banking									Retail Banking						All Other									Total
	2015			2014			2013			2015		2014		2013		2015			2014			2013			2015		2014		2013
Net interest income(a)	$	63,939		$	67,482		$	83,574		$	917,041	$	908,828	$	962,214	$	105,143		$	(21,543	)	$	(183,361	)	$	2,842,587	$	2,676,446	$	2,673,229
Noninterest income		336,099			331,366			325,454			324,953		336,042		373,628		594,586			599,870			672,576			1,825,037		1,779,273		1,865,205
		400,038			398,848			409,028			1,241,994		1,244,870		1,335,842		699,729			578,327			489,215			4,667,624		4,455,719		4,538,434
Provision for credit losses		(5,225	)		(1,508	)		(10,906	)		72,953		77,158		72,502		62,074			(12,954	)		(3,679	)		170,000		124,000		185,000
Amortization of core deposit and other intangible assets		—			—			—			—		—		—		26,424			33,824			46,912			26,424		33,824		46,912
Depreciation and other amortization		27,883			47,086			48,698			35,291		37,788		34,599		64,852			61,848			57,120			148,925		164,906		156,823
Other noninterest expense		233,651			216,556			221,984			682,594		668,919		687,275		959,345			854,883			713,873			2,647,583		2,490,744		2,384,131
Income (loss) before taxes		143,729			136,714			149,252			451,156		461,005		541,466		(412,966	)		(359,274	)		(325,011	)		1,674,692		1,642,245		1,765,568
Income tax expense (benefit)		55,151			52,172			56,929			183,638		187,647		220,516		(213,682	)		(201,119	)		(180,238	)		595,025		575,999		627,088
Net income (loss)	$	88,578		$	84,542		$	92,323		$	267,518	$	273,358	$	320,950	$	(199,284	)	$	(158,155	)	$	(144,773	)	$	1,079,667	$	1,066,246	$	1,138,480
Average total assets (in millions)	$	2,918		$	3,076		$	2,651		$	11,035	$	10,449	$	10,997	$	12,870		$	12,277		$	9,262		$	101,780	$	92,143	$	83,662
Capital expenditures (in millions)	$	—		$	—		$	—		$	14	$	14	$	40	$	68		$	57		$	89		$	82	$	73	$	130

(a) Net interest income is the difference between actual taxable-equivalent interest earned on assets and interest paid on liabilities by a segment and a funding charge (credit) based on the Company’s internal funds transfer pricing methodology. Segments are charged a cost to fund any assets (e.g. loans) and are paid a funding credit for any funds provided (e.g. deposits). The taxable-equivalent adjustment aggregated $24,463,000 in 2015, $23,642,000 in 2014 and $24,971,000 in 2013 and is eliminated in “All Other” net interest income and income tax expense (benefit).

Intersegment Activity Eliminated in Arriving at Consolidated Totals was Included in "All Other" Category

The amount of intersegment activity eliminated in arriving at consolidated totals was included in the “All Other” category as follows:

	Year Ended December 31
	2015			2014			2013
	(In thousands)
Revenues	$	(48,972	)	$	(49,800	)	$	(50,128	)
Expenses		(13,332	)		(12,014	)		(16,235	)
Income taxes (benefit)		(14,503	)		(15,375	)		(13,791	)
Net income (loss)		(21,137	)		(22,411	)		(20,102	)