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Operating Segment Information
 12 Months Ended
Dec. 31, 2022
Segment Reporting [Abstract]  
OPERATING SEGMENT INFORMATION OPERATING SEGMENT INFORMATION
We manage our operations with a primary focus on geographic area. We conduct our operations primarily through seven separately managed affiliate banks, each with its own local branding and management team, including Zions Bank, Amegy Bank, California Bank & Trust, National Bank of Arizona, Nevada State Bank, Vectra Bank Colorado, and The Commerce Bank of Washington. These affiliate banks comprise our primary business segments. Performance assessment and resource allocation are based upon this geographic structure. Our affiliate banks are supported by an enterprise operating segment (referred to as the “Other” segment) that provides governance and risk management, allocates capital, establishes strategic objectives, and includes centralized technology, back-office functions, and certain lines of business not operated through our affiliate banks.
We allocate the cost of centrally provided services to the business segments based upon estimated or actual usage of those services. We also allocate capital based on the risk-weighted assets held at each business segment. We use an internal funds transfer pricing (“FTP”) allocation process to report results of operations for business segments. This process is subject to change and refinement over time. In the third quarter of 2020, we began allocating the net interest income associated with our Treasury department to the business segments. Historically, this amount was presented in the “Other” segment. Prior period amounts have been revised to reflect the impact of these changes had they been instituted for the periods presented. Total average loans and deposits presented for the business segments include insignificant intercompany amounts between business segments and may also include deposits with the “Other” segment.
At December 31, 2022, Zions Bank operated 95 branches in Utah, 25 branches in Idaho, and one branch in Wyoming. CB&T operated 80 branches in California. Amegy operated 75 branches in Texas. NBAZ operated 56 branches in Arizona. NSB operated 46 branches in Nevada. Vectra operated 34 branches in Colorado and one branch in New Mexico. TCBW operated two branches in Washington and one branch in Oregon.
In July 2022, NSB completed the purchase of three Northern Nevada City National Bank branches and their associated deposit, credit card, and loan accounts. We acquired approximately $430 million in deposits and $95 million in commercial and consumer loans at the time of the purchase.
Transactions between business segments are primarily conducted at fair value, resulting in profits that are eliminated for reporting consolidated results of operations. The following schedule presents average loans, average deposits, and income before income taxes because we use these metrics when evaluating performance and making decisions pertaining to the business segments. The condensed statement of income identifies the components of income and expense which affect the operating amounts presented in the “Other” segment.
The following schedule presents selected operating segment information:
(In millions)Zions BankCB&TAmegy
202220212020202220212020202220212020
SELECTED INCOME STATEMENT DATA
Net interest income$741 $633 $650 $595 $536 $512 $513 $462 $485 
Provision for credit losses43 (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 income184 185 158 108 102 95 158 141 133 
Noninterest expense495 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 deposits24,317 23,588 18,370 16,160 15,796 13,763 15,735 15,496 12,970 
(In millions)NBAZNSBVectra
202220212020202220212020202220212020
SELECTED INCOME STATEMENT DATA
Net interest income$241 $204 $216 $183 $146 $146 $153 $136 $135 
Provision for credit losses11 (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 income48 46 41 48 50 43 31 33 32 
Noninterest expense167 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 deposits8,035 7,288 5,771 7,436 6,691 5,427 4,109 4,386 3,637 
(In millions)TCBWOtherConsolidated Bank
202220212020202220212020202220212020
SELECTED INCOME STATEMENT DATA
Net interest income$63 $53 $52 $31 $38 $20 $2,520 $2,208 $2,216 
Provision for credit losses1 (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 income7 6 5 48 140 67 632 703 574 
Noninterest expense24 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 deposits1,571 1,537 1,256 1,166 1,475 2,495 78,529 76,257 63,689