XML 97 R87.htm IDEA: XBRL DOCUMENT v3.19.1
Operating Segment Information (Details)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Branches
Mar. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Segment Reporting Information [Line Items]      
Number of community regional banks operating in distinct geographical areas 7    
Interest Income (Expense), Net $ 576 $ 542  
Provision for Loan and Lease Losses 2 (40)  
Interest Income (Expense), after Provision for Loan Loss 572 589  
Noninterest Income, Other Operating Income 2 4  
Noninterest Expense 430 419  
Income (Loss) from Continuing Operations before Income Taxes, Domestic $ 274 308  
Number of Branches | Branches 433    
Investment Securities Gross Unrealized Losses Less Than 12 Months $ 15   $ 40
Investment Securities Estimated Fair Value Less Than 12 Months 1,256   2,858
Investment Securities Gross Unrealized Losses 12 Months or More 187   297
Investment Securities Estimated Fair Value 12 Months or More 9,576   9,375
Investment Securities Gross Unrealized Losses Total 202   337
Investment Securities Estimated Fair Value Total 10,832   12,233
Zions Bank [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net 180 167  
Provision for Loan and Lease Losses 11 (2)  
Interest Income (Expense), after Provision for Loan Loss 169 169  
Noninterest Income, Other Operating Income 33 35  
Noninterest Expense 118 113  
Income (Loss) from Continuing Operations before Income Taxes, Domestic 84 91  
Average Loans And Leases 12,939 12,453  
Average Deposits 15,524 15,712  
Amegy Corporation [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net 131 127  
Provision for Loan and Lease Losses (15) (53)  
Interest Income (Expense), after Provision for Loan Loss 146 180  
Noninterest Income, Other Operating Income 34 32  
Noninterest Expense 88 87  
Income (Loss) from Continuing Operations before Income Taxes, Domestic 92 125  
Average Loans And Leases 11,861 11,370  
Average Deposits 11,441 10,816  
National Bank Of Arizona [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net 60 53  
Provision for Loan and Lease Losses 3 2  
Interest Income (Expense), after Provision for Loan Loss 57 51  
Noninterest Income, Other Operating Income 10 9  
Noninterest Expense 39 38  
Income (Loss) from Continuing Operations before Income Taxes, Domestic 28 22  
Average Loans And Leases 4,749 4,543  
Average Deposits 4,894 4,783  
Zions Bank [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net 14 11  
Provision for Loan and Lease Losses 0 1  
Interest Income (Expense), after Provision for Loan Loss 14 10  
Noninterest Income, Other Operating Income 1 1  
Noninterest Expense 6 6  
Income (Loss) from Continuing Operations before Income Taxes, Domestic 9 5  
Average Loans And Leases 1,110 1,084  
Average Deposits 1,075 1,073  
California Bank Trust [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net 138 131  
Provision for Loan and Lease Losses 3 2  
Interest Income (Expense), after Provision for Loan Loss 135 129  
Noninterest Income, Other Operating Income 19 21  
Noninterest Expense 82 77  
Income (Loss) from Continuing Operations before Income Taxes, Domestic 72 73  
Average Loans And Leases 10,574 9,929  
Average Deposits 11,243 11,119  
Nevada State Bank [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net 40 35  
Provision for Loan and Lease Losses (1) 0  
Interest Income (Expense), after Provision for Loan Loss 41 35  
Noninterest Income, Other Operating Income 10 10  
Noninterest Expense 36 36  
Income (Loss) from Continuing Operations before Income Taxes, Domestic 15 9  
Average Loans And Leases 2,500 2,348  
Average Deposits 4,329 4,223  
Vectra Bank Colorado [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net 36 32  
Provision for Loan and Lease Losses 4 3  
Interest Income (Expense), after Provision for Loan Loss 32 29  
Noninterest Income, Other Operating Income 6 6  
Noninterest Expense 28 27  
Income (Loss) from Continuing Operations before Income Taxes, Domestic 10 8  
Average Loans And Leases 3,055 2,794  
Average Deposits 2,821 2,711  
Other Segment [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net (23) (14)  
Provision for Loan and Lease Losses (1) 0  
Interest Income (Expense), after Provision for Loan Loss (22) (14)  
Noninterest Income, Other Operating Income 19 24  
Noninterest Expense 33 35  
Income (Loss) from Continuing Operations before Income Taxes, Domestic (36) (25)  
Average Loans And Leases 383 343  
Average Deposits $ 2,589 1,557  
ARIZONA | National Bank Of Arizona [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 58    
NEVADA | Nevada State Bank [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 50    
Utah [Member] | Zions Bank [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 98    
Idaho [Member] | Zions Bank [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 23    
WYOMING | Zions Bank [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 1    
Colorado [Member] | Vectra Bank Colorado [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 36    
New Mexico [Member] | Vectra Bank Colorado [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 1    
WASHINGTON | Zions Bank [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 1    
OREGON | Zions Bank [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 1    
TEXAS | Amegy Corporation [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 74    
CALIFORNIA | California Bank And Trust [Member]      
Segment Reporting Information [Line Items]      
Number of Branches | Branches 90    
Consolidated Entities [Member]      
Segment Reporting Information [Line Items]      
Interest Income (Expense), Net $ 576 542  
Provision for Loan and Lease Losses 4 (47)  
Interest Income (Expense), after Provision for Loan Loss 572 589  
Noninterest Income, Other Operating Income 132 138  
Noninterest Expense 430 419  
Income (Loss) from Continuing Operations before Income Taxes, Domestic 274 308  
Average Loans And Leases 47,171 44,864  
Average Deposits 53,916 $ 51,994  
Available-for-sale Securities [Member]      
Segment Reporting Information [Line Items]      
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 15   39
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 1,232   2,772
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 181   287
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 9,161   8,937
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 196   326
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 10,393   11,709
Agency Securities [Member]      
Segment Reporting Information [Line Items]      
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0   2
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 46   245
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 11   17
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 994   913
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 11   19
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 1,040   1,158
Agency Guaranteed Mortgage Backed Securities [Member]      
Segment Reporting Information [Line Items]      
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 2   16
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 270   1,081
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 134   224
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 6,799   6,661
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 136   240
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 7,069   7,742
Small Business Administration Loan Backed Securities [Member]      
Segment Reporting Information [Line Items]      
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 13   19
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 876   1,180
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 30   28
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 898   711
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 43   47
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 1,774   1,891
US States and Political Subdivisions Debt Securities [Member]      
Segment Reporting Information [Line Items]      
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value 439   524
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 6   10
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0   1
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value 24   86
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value 415   438
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss 6   11
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0   2
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 40   266
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 3   14
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 458   641
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 3   16
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 498   907
Available-for-sale, Unrealized losses, Other [Member]      
Segment Reporting Information [Line Items]      
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0   0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 0   0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 3   4
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 12   11
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 3   4
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value $ 12   $ 11