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Operating Segment Information
 6 Months Ended
Jun. 30, 2021
Segment Reporting [Abstract]  
OPERATING SEGMENT INFORMATION OPERATING SEGMENT INFORMATION
We manage our operations and prepare management reports and other information 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. The operating segment identified as “Other” includes certain non-bank financial service subsidiaries, centralized back-office functions, and eliminations of transactions between segments.
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 system and process to report results of operations for business segments, which is continually refined. In the third quarter of 2020, we allocated 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 this change had it been instituted in 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 June 30, 2021, Zions Bank operated 96 branches in Utah, 25 branches in Idaho, and one branch in Wyoming. Amegy operated 75 branches in Texas. CB&T operated 83 branches in California. NBAZ operated 56 branches in Arizona. NSB operated 45 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.
The accounting policies of the individual business segments are the same as those of the Bank. Transactions between business segments are primarily conducted at fair value, resulting in profits that are eliminated for reporting consolidated results of operations.
The following schedules do not present total assets or income tax expense for each operating segment, but instead present 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 for the three months ended June 30, 2021 and 2020:
Zions BankAmegyCB&T
(In millions)202120202021202020212020
SELECTED INCOME STATEMENT DATA
Net interest income$159 $165 $117 $126 $133 $127 
Provision for credit losses(8)40 (45)25 (32)46 
Net interest income after provision for credit losses
167 125 162 101 165 81 
Noninterest income46 38 35 31 25 19 
Noninterest expense113 111 84 79 76 74 
Income (loss) before income taxes
$100 $52 $113 $53 $114 $26 
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans$13,248 $14,222 $12,452 $13,570 $13,053 $12,524 
Total average deposits22,862 17,977 15,350 13,023 15,602 13,522 
NBAZNSBVectra
(In millions)202120202021202020212020
SELECTED INCOME STATEMENT DATA
Net interest income$53 $54 $37 $37 $35 $34 
Provision for credit losses(14)16 (12)40 (11)(1)
Net interest income after provision for credit losses
67 38 49 (3)46 35 
Noninterest income11 10 12 10 8 8 
Noninterest expense37 35 36 34 29 27 
Income (loss) before income taxes
$41 $13 $25 $(27)$25 $16 
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans$4,950 $5,247 $3,120 $3,169 $3,476 $3,490 
Total average deposits7,036 5,722 6,552 5,402 4,388 3,662 
TCBWOtherConsolidated Bank
(In millions)202120202021202020212020
SELECTED INCOME STATEMENT DATA
Net interest income$14 $14 $7 $6 $555 $563 
Provision for credit losses(1)5 — (3)(123)168 
Net interest income after provision for credit losses
15 9 7 9 678 395 
Noninterest income2 1 66 — 205 117 
Noninterest expense5 5 48 65 428 430 
Income (loss) before income taxes
$12 $5 $25 $(56)$455 $82 
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans$1,606 $1,485 $865 $561 $52,770 $54,268 
Total average deposits1,500 1,282 1,350 2,410 74,640 63,000 
The following schedule presents selected operating segment information for the six months ended June 30, 2021 and 2020:
Zions BankAmegyCB&T
(In millions)202120202021202020212020
SELECTED INCOME STATEMENT DATA
Net interest income$316 $329 $233 $246 $264 $252 
Provision for credit losses(19)94 (98)127 (69)84 
Net interest income after provision for credit losses
335 235 331 119 333 168 
Noninterest income85 76 67 67 49 44 
Noninterest expense231 221 169 161 156 151 
Income (loss) before income taxes
$189 $90 $229 $25 $226 $61 
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans$13,488 $13,611 $12,577 $12,984 $13,052 $11,773 
Total average deposits22,289 16,953 14,800 12,344 15,393 12,825 
NBAZNSBVectra
(In millions)202120202021202020212020
SELECTED INCOME STATEMENT DATA
Net interest income$105 $108 $74 $73 $68 $67 
Provision for credit losses(24)35 (30)52 (11)23 
Net interest income after provision for credit losses
129 73 104 21 79 44 
Noninterest income22 21 25 21 16 16 
Noninterest expense75 72 72 70 57 53 
Income (loss) before income taxes
$76 $22 $57 $(28)$38 $7 
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans$5,029 $4,991 $3,183 $2,942 $3,463 $3,296 
Total average deposits6,791 5,413 6,312 5,115 4,334 3,325 
TCBWOtherConsolidated Bank
(In millions)202120202021202020212020
SELECTED INCOME STATEMENT DATA
Net interest income$27 $26 $13 $10 $1,100 $1,111 
Provision for credit losses(3)10 (1)1 (255)426 
Net interest income after provision for credit losses
30 16 14 9 1,355 685 
Noninterest income3 2 107 3 374 250 
Noninterest expense11 11 92 98 863 837 
Income (loss) before income taxes
$22 $7 $29 $(86)$866 $98 
SELECTED AVERAGE BALANCE SHEET DATA
Total average loans$1,590 $1,372 $833 $563 $53,215 $51,532 
Total average deposits1,449 1,165 1,684 2,814 73,052 59,954