Operating Segment Information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following schedule presents selected operating segment information:

(In millions)	Zions Bank						CB&T						Amegy
	2022		2021		2020		2022		2021		2020		2022		2021		2020
SELECTED INCOME STATEMENT DATA
Net interest income	$	741	$	633	$	650	$	595	$	536	$	512	$	513	$	462	$	485
Provision for credit losses	43		(26)		67		49		(78)		120		5		(96)		111
Net interest income after provision for credit losses	698		659		583		546		614		392		508		558		374
Noninterest income	184		185		158		108		102		95		158		141		133
Noninterest expense	495		464		446		340		311		305		355		337		329
Income (loss) before income taxes	$	387	$	380	$	295	$	314	$	405	$	182	$	311	$	362	$	178
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans	$	13,277	$	13,198	$	13,845	$	13,129	$	12,892	$	12,366	$	12,110	$	12,189	$	13,114
Total average deposits	24,317		23,588		18,370		16,160		15,796		13,763		15,735		15,496		12,970
(In millions)	NBAZ						NSB						Vectra
	2022		2021		2020		2022		2021		2020		2022		2021		2020
SELECTED INCOME STATEMENT DATA
Net interest income	$	241	$	204	$	216	$	183	$	146	$	146	$	153	$	136	$	135
Provision for credit losses	11		(27)		35		4		(35)		37		9		(12)		34
Net interest income after provision for credit losses	230		231		181		179		181		109		144		148		101
Noninterest income	48		46		41		48		50		43		31		33		32
Noninterest expense	167		151		147		151		142		141		120		114		109
Income (loss) before income taxes	$	111	$	126	$	75	$	76	$	89	$	11	$	55	$	67	$	24
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans	$	4,911	$	4,849	$	5,099	$	2,987	$	3,015	$	3,102	$	3,632	$	3,414	$	3,401
Total average deposits	8,035		7,288		5,771		7,436		6,691		5,427		4,109		4,386		3,637
(In millions)	TCBW						Other						Consolidated Bank
	2022		2021		2020		2022		2021		2020		2022		2021		2020
SELECTED INCOME STATEMENT DATA
Net interest income	$	63	$	53	$	52	$	31	$	38	$	20	$	2,520	$	2,208	$	2,216
Provision for credit losses	1		(3)		7		—		1		3		122		(276)		414
Net interest income after provision for credit losses	62		56		45		31		37		17		2,398		2,484		1,802
Noninterest income	7		6		5		48		140		67		632		703		574
Noninterest expense	24		21		22		226		201		205		1,878		1,741		1,704
Income (loss) before income taxes	$	45	$	41	$	28	$	(147)	$	(24)	$	(121)	$	1,152	$	1,446	$	672
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans	$	1,630	$	1,569	$	1,460	$	922	$	857	$	629	$	52,598	$	51,983	$	53,016
Total average deposits	1,571		1,537		1,256		1,166		1,475		2,495		78,529		76,257		63,689