Operating Segment Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following schedule presents selected operating segment information:

(In millions)	Zions Bank						Amegy						CB&T
	2021		2020		2019		2021		2020		2019		2021		2020		2019
SELECTED INCOME STATEMENT DATA
Net interest income	$	634	$	650	$	688	$	463	$	485	$	489	$	537	$	512	$	512
Provision for credit losses	(26)		67		18		(96)		111		9		(78)		120		7
Net interest income after provision for credit losses	660		583		670		559		374		480		615		392		505
Noninterest income	185		158		147		141		133		138		102		95		88
Noninterest expense	464		446		471		337		329		344		311		305		316
Income before income taxes	$	381	$	295	$	346	$	363	$	178	$	274	$	406	$	182	$	277
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans	$	13,198	$	13,845	$	13,109	$	12,189	$	13,114	$	12,235	$	12,892	$	12,366	$	10,763
Total average deposits	23,588		18,370		15,561		15,496		12,970		11,627		15,796		13,763		11,522
(In millions)	NBAZ						NSB						Vectra
	2021		2020		2019		2021		2020		2019		2021		2020		2019
SELECTED INCOME STATEMENT DATA
Net interest income	$	205	$	216	$	223	$	147	$	146	$	148	$	136	$	135	$	135
Provision for credit losses	(27)		35		2		(35)		37		(1)		(12)		34		3
Net interest income after provision for credit losses	232		181		221		182		109		149		148		101		132
Noninterest income	46		41		42		50		43		43		33		32		26
Noninterest expense	151		147		156		142		141		145		114		109		108
Income before income taxes	$	127	$	75	$	107	$	90	$	11	$	47	$	67	$	24	$	50
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans	$	4,849	$	5,099	$	4,774	$	3,015	$	3,102	$	2,630	$	3,414	$	3,401	$	3,109
Total average deposits	7,288		5,771		5,002		6,691		5,427		4,512		4,386		3,637		2,853
(In millions)	TCBW						Other						Consolidated Bank
	2021		2020		2019		2021		2020		2019		2021		2020		2019
SELECTED INCOME STATEMENT DATA
Net interest income	$	54	$	52	$	53	$	32	$	20	$	24	$	2,208	$	2,216	$	2,272
Provision for credit losses	(3)		7		(1)		1		3		2		(276)		414		39
Net interest income after provision for credit losses	57		45		54		31		17		22		2,484		1,802		2,233
Noninterest income	6		5		5		140		67		73		703		574		562
Noninterest expense	21		22		22		201		205		180		1,741		1,704		1,742
Income (loss) before income taxes	$	42	$	28	$	37	$	(30)	$	(121)	$	(85)	$	1,446	$	672	$	1,053
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans	$	1,569	$	1,460	$	1,194	$	857	$	629	$	451	$	51,983	$	53,016	$	48,265
Total average deposits	1,537		1,256		1,094		1,475		2,495		2,910		76,257		63,689		55,081