Operating Segment Information (Tables)

6 Months Ended

Jun. 30, 2013

Operating Segment Information [Abstract]

Schedule of Segment Reporting Information, by Segment

(In millions)	Zions Bank						CB&T						Amegy						NBAZ						NSB
	2013			2012			2013			2012			2013			2012			2013			2012			2013			2012
CONDENSED INCOME STATEMENT
Net interest income	$	150.8		$	166.1		$	122.6		$	117.2		$	94.0		$	91.4		$	41.4		$	41.4		$	28.6		$	31.0
Provision for loan losses	(10.7		)	20.4			(3.0		)	(3.8		)	5.7			(8.9		)	(4.7		)	2.5			(8.7		)	(1.6		)
Net interest income after provision for loan losses	161.5			145.7			125.6			121.0			88.3			100.3			46.1			38.9			37.3			32.6
Net impairment losses on investment securities	—			(0.2		)	—			—			—			—			—			—			—			—
Loss on sale of investment securities to Parent	—			—			—			—			—			—			—			—			—			—
Other noninterest income	54.2			51.1			19.7			19.1			35.5			44.3			8.8			7.9			9.7			8.6
Noninterest expense	128.0			125.5			94.5			84.4			91.9			86.8			35.4			38.1			34.2			34.4
Income (loss) before income taxes	87.7			71.1			50.8			55.7			31.9			57.8			19.5			8.7			12.8			6.8
Income tax expense (benefit)	32.1			25.2			19.9			22.2			10.6			18.8			7.4			3.4			4.4			2.4
Net income (loss)	$	55.6		$	45.9		$	30.9		$	33.5		$	21.3		$	39.0		$	12.1		$	5.3		$	8.4		$	4.4
AVERAGE BALANCE SHEET DATA
Total assets	$	17,522		$	17,330		$	10,823		$	10,880		$	13,215		$	12,081		$	4,620		$	4,457		$	4,064		$	4,171
Cash and due from banks	352			377			165			174			273			259			71			70			82			89
Money market investments	2,949			2,538			1,237			1,148			2,676			2,395			433			610			956			996
Total securities	1,311			1,369			334			345			313			338			300			280			780			784
Total loans	12,363			12,402			8,287			8,350			8,790			7,997			3,612			3,280			2,124			2,169
Total deposits	15,234			14,814			9,231			9,219			10,798			9,595			3,918			3,721			3,625			3,626
Shareholder’s equity:
Preferred equity	280			480			162			248			251			410			180			275			113			242
Common equity	1,533			1,430			1,319			1,291			1,776			1,661			407			358			304			279
Noncontrolling interests	—			—			—			—			—			—			—			—			—			—
Total shareholder’s equity	1,813			1,910			1,481			1,539			2,027			2,071			587			633			417			521
	Vectra						TCBW						Other						Consolidated Company
	2013			2012			2013			2012			2013			2012			2013			2012
CONDENSED INCOME STATEMENT
Net interest income	$	25.1		$	28.5		$	6.8		$	6.9		$	(38.6	)	$	(56.2	)	$	430.7		$	426.3
Provision for loan losses	(0.8		)	1.4			0.1			0.8			0.1			—			(22.0		)	10.8
Net interest income after provision for loan losses	25.9			27.1			6.7			6.1			(38.7		)	(56.2		)	452.7			415.5
Net impairment losses on investment securities	—			—			—			—			(4.2		)	(7.1		)	(4.2		)	(7.3		)
Loss on sale of investment securities to Parent	—			—			—			—			—			—			—			—
Other noninterest income	6.1			5.7			1.0			0.9			(5.7		)	(1.6		)	129.3			136.0
Noninterest expense	25.5			24.7			3.9			4.3			38.3			3.5			451.7			401.7
Income (loss) before income taxes	6.5			8.1			3.8			2.7			(86.9		)	(68.4		)	126.1			142.5
Income tax expense (benefit)	2.1			2.7			1.3			0.9			(34.7		)	(24.6		)	43.1			51.0
Net income (loss)	$	4.4		$	5.4		$	2.5		$	1.8		$	(52.2	)	$	(43.8	)	$	83.0		$	91.5
AVERAGE BALANCE SHEET DATA
Total assets	$	2,529		$	2,380		$	836		$	871		$	1,055		$	720		$	54,664		$	52,890
Cash and due from banks	50			51			19			20			(12		)	(14		)	1,000			1,026
Money market investments	78			34			103			161			220			(96		)	8,652			7,786
Total securities	184			220			107			120			539			445			3,868			3,901
Total loans	2,138			1,993			595			557			62			69			37,971			36,817
Total deposits	2,165			2,029			703			721			(689		)	(783		)	44,985			42,942
Shareholder’s equity:
Preferred equity	70			70			3			13			460			93			1,519			1,831
Common equity	237			208			84			78			(558		)	(592		)	5,102			4,713
Noncontrolling interests	—			—			—			—			(3		)	(2		)	(3		)	(2		)
Total shareholder’s equity	307			278			87			91			(101		)	(501		)	6,618			6,542