Reportable Operating Segments (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2016

Dec. 31, 2015

Reportable Operating Segments

Schedule of selected business segment financial information

					Treasury
	Retail		Commercial		and
(dollars inthousands)	Banking		Banking		Other		Total
Three Months Ended September 30, 2016
Net interest income (expense)	$	104,048	$	28,655	$	(10,020)	$	122,683
Provision for loan and lease losses		(770)		(1,330)		—		(2,100)
Net interest income (expense) after provision for loan and lease losses		103,278		27,325		(10,020)		120,583
Noninterest income		22,398		15,479		10,813		48,690
Noninterest expense		(51,093)		(14,792)		(16,919)		(82,804)
Income (loss) before provision for income taxes		74,583		28,012		(16,126)		86,469
(Provision) benefit for income taxes		(27,672)		(10,399)		4,837		(33,234)
Net income (loss)	$	46,911	$	17,613	$	(11,289)	$	53,235

					Treasury
	Retail		Commercial		and
(dollars in thousands)	Banking		Banking		Other		Total
Nine Months Ended September 30, 2016
Net interest income (expense)	$	310,244	$	84,460	$	(34,282)	$	360,422
Provision for loan and lease losses		(1,722)		(2,978)		—		(4,700)
Net interest income (expense) after provision for loan and lease losses		308,522		81,482		(34,282)		355,722
Noninterest income		68,553		48,498		51,529		168,580
Noninterest expense		(160,495)		(39,676)		(46,170)		(246,341)
Income (loss) before provision for income taxes		216,580		90,304		(28,923)		277,961
(Provision) benefit for income taxes		(80,727)		(33,640)		10,032		(104,335)
Net income (loss)	$	135,853	$	56,664	$	(18,891)	$	173,626

					Treasury
	Retail		Commercial		and
(dollars in thousands)	Banking		Banking		Other		Total
Three Months Ended September 30, 2015
Net interest income (expense)	$	100,014	$	26,941	$	(13,405)	$	113,550
Provision for loan and lease losses		(1,202)		(1,348)		—		(2,550)
Net interest income (expense) after provision for loan and lease losses		98,812		25,593		(13,405)		111,000
Noninterest income		25,460		19,346		11,696		56,502
Noninterest expense		(48,449)		(13,247)		(17,681)		(79,377)
Income (loss) before provision for income taxes		75,823		31,692		(19,390)		88,125
(Provision) benefit for income taxes		(27,688)		(11,583)		6,035		(33,236)
Net income (loss)	$	48,135	$	20,109	$	(13,355)	$	54,889

					Treasury
	Retail		Commercial		and
(dollars in thousands)	Banking		Banking		Other		Total
Nine Months Ended September 30, 2015
Net interest income (expense)	$	297,840	$	86,045	$	(38,782)	$	345,103
Provision for loan and lease losses		(3,487)		(3,913)		—		(7,400)
Net interest income (expense) after provision for loan and lease losses		294,353		82,132		(38,782)		337,703
Noninterest income		74,002		54,475		35,738		164,215
Noninterest expense		(150,278)		(40,335)		(48,694)		(239,307)
Income (loss) before provision for income taxes		218,077		96,272		(51,738)		262,611
(Provision) benefit for income taxes		(81,328)		(35,927)		18,213		(99,042)
Net income (loss)	$	136,749	$	60,345	$	(33,525)	$	163,569

			Commercial		Treasury and
(dollars in thousands)	Retail Banking		Banking		Other		Total
Year Ended December 31, 2015
Net interest income (expense)	$	399,153	$	113,466	$	(51,294)	$	461,325
Provision for loan and lease losses		(4,643)		(5,257)		—		(9,900)
Net interest income (expense) after provision for loan and lease losses		394,510		108,209		(51,294)		451,425
Noninterest income		97,934		72,218		41,251		211,403
Noninterest expense		(199,308)		(55,181)		(65,112)		(319,601)
Income (loss) before provision for income taxes		293,136		125,246		(75,155)		343,227
Provision for income taxes		(99,764)		(43,181)		13,498		(129,447)
Net income (loss)	$	193,372	$	82,065	$	(61,657)	$	213,780
Total assets as of December 31, 2015	$	6,725,665	$	4,120,805	$	8,506,211	$	19,352,681

			Commercial		Treasury and
(dollars in thousands)	Retail Banking		Banking		Other		Total
Year Ended December 31, 2014
Net interest income (expense)	$	384,065	$	114,188	$	(54,455)	$	443,798
Provision for loan and lease losses		(5,249)		(5,851)		—		(11,100)
Net interest income (expense) after provision for loan and lease losses		378,816		108,337		(54,455)		432,698
Noninterest income		96,023		65,319		47,895		209,237
Noninterest expense		(186,322)		(49,692)		(61,677)		(297,691)
Income (loss) before provision for income taxes		288,517		123,964		(68,237)		344,244
Provision for income taxes		(103,080)		(44,169)		19,677		(127,572)
Net income (loss)	$	185,437	$	79,795	$	(48,560)	$	216,672
Total assets as of December 31, 2014	$	6,271,341	$	3,878,005	$	7,984,350	$	18,133,696