Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000109380-21-000236-index-headers.html | 2021-11-04 15:59:43 | |
| 0000109380-21-000236-index.html | 2021-11-04 15:59:43 | |
| 0000109380-21-000236.txt | 2021-11-04 15:59:43 | |
 0000109380-21-000236-xbrl.zip | 1084734 | 2021-11-04 15:59:43 |
| exh311certofceo10-q2021930.htm | 10447 | 2021-11-04 15:59:43 |
| exh312certofcfo10-q2021930.htm | 10190 | 2021-11-04 15:59:43 |
| exh32certofceocfo2021930.htm | 5999 | 2021-11-04 15:59:43 |
| FilingSummary.xml | 56763 | 2021-11-04 15:59:43 |
| Financial_Report.xlsx | 168345 | 2021-11-04 15:59:43 |
| MetaLinks.json | 1080224 | 2021-11-04 15:59:43 |
| R1.htm | 62433 | 2021-11-04 15:59:43 |
| R10.htm | 14479 | 2021-11-04 15:59:43 |
| R11.htm | 190550 | 2021-11-04 15:59:43 |
| R12.htm | 64465 | 2021-11-04 15:59:43 |
| R13.htm | 279549 | 2021-11-04 15:59:43 |
| R14.htm | 1083290 | 2021-11-04 15:59:43 |
| R15.htm | 222354 | 2021-11-04 15:59:43 |
| R16.htm | 50540 | 2021-11-04 15:59:43 |
| R17.htm | 74857 | 2021-11-04 15:59:43 |
| R18.htm | 27283 | 2021-11-04 15:59:43 |
| R19.htm | 291518 | 2021-11-04 15:59:43 |
| R2.htm | 105255 | 2021-11-04 15:59:43 |
| R20.htm | 9213 | 2021-11-04 15:59:43 |
| R21.htm | 53846 | 2021-11-04 15:59:43 |
| R22.htm | 202052 | 2021-11-04 15:59:43 |
| R23.htm | 12881 | 2021-11-04 15:59:43 |
| R24.htm | 199006 | 2021-11-04 15:59:43 |
| R25.htm | 125637 | 2021-11-04 15:59:43 |
| R26.htm | 283310 | 2021-11-04 15:59:43 |
| R27.htm | 1077002 | 2021-11-04 15:59:43 |
| R28.htm | 227764 | 2021-11-04 15:59:43 |
| R29.htm | 50932 | 2021-11-04 15:59:43 |
| R3.htm | 16771 | 2021-11-04 15:59:43 |
| R30.htm | 79959 | 2021-11-04 15:59:43 |
| R31.htm | 14714 | 2021-11-04 15:59:43 |
| R32.htm | 287505 | 2021-11-04 15:59:43 |
| R33.htm | 55826 | 2021-11-04 15:59:43 |
| R34.htm | 195398 | 2021-11-04 15:59:43 |
| R35.htm | 5881 | 2021-11-04 15:59:43 |
| R36.htm | 68455 | 2021-11-04 15:59:43 |
| R37.htm | 7774 | 2021-11-04 15:59:43 |
| R38.htm | 24451 | 2021-11-04 15:59:43 |
| R39.htm | 6999 | 2021-11-04 15:59:43 |
| R4.htm | 124928 | 2021-11-04 15:59:43 |
| R40.htm | 33471 | 2021-11-04 15:59:43 |
| R41.htm | 5389 | 2021-11-04 15:59:43 |
| R42.htm | 22973 | 2021-11-04 15:59:43 |
| R43.htm | 113914 | 2021-11-04 15:59:43 |
| R44.htm | 16250 | 2021-11-04 15:59:43 |
| R45.htm | 58244 | 2021-11-04 15:59:43 |
| R46.htm | 111475 | 2021-11-04 15:59:43 |
| R47.htm | 72308 | 2021-11-04 15:59:43 |
| R48.htm | 27525 | 2021-11-04 15:59:43 |
| R49.htm | 9079 | 2021-11-04 15:59:43 |
| R5.htm | 36353 | 2021-11-04 15:59:43 |
| R50.htm | 24452 | 2021-11-04 15:59:43 |
| R51.htm | 40738 | 2021-11-04 15:59:43 |
| R52.htm | 69113 | 2021-11-04 15:59:43 |
| R53.htm | 44318 | 2021-11-04 15:59:43 |
| R54.htm | 53887 | 2021-11-04 15:59:43 |
| R55.htm | 149820 | 2021-11-04 15:59:43 |
| R56.htm | 294024 | 2021-11-04 15:59:43 |
| R57.htm | 190962 | 2021-11-04 15:59:43 |
| R58.htm | 25793 | 2021-11-04 15:59:43 |
| R59.htm | 52635 | 2021-11-04 15:59:43 |
| R6.htm | 76425 | 2021-11-04 15:59:43 |
| R60.htm | 58758 | 2021-11-04 15:59:43 |
| R61.htm | 53750 | 2021-11-04 15:59:43 |
| R62.htm | 15163 | 2021-11-04 15:59:43 |
| R63.htm | 15737 | 2021-11-04 15:59:43 |
| R64.htm | 16897 | 2021-11-04 15:59:43 |
| R65.htm | 19267 | 2021-11-04 15:59:43 |
| R66.htm | 15461 | 2021-11-04 15:59:43 |
| R67.htm | 9501 | 2021-11-04 15:59:43 |
| R68.htm | 7374 | 2021-11-04 15:59:43 |
| R69.htm | 16099 | 2021-11-04 15:59:43 |
| R7.htm | 4822 | 2021-11-04 15:59:43 |
| R70.htm | 26328 | 2021-11-04 15:59:43 |
| R71.htm | 10425 | 2021-11-04 15:59:43 |
| R72.htm | 30931 | 2021-11-04 15:59:43 |
| R73.htm | 35339 | 2021-11-04 15:59:43 |
| R74.htm | 26199 | 2021-11-04 15:59:43 |
| R75.htm | 13197 | 2021-11-04 15:59:43 |
| R76.htm | 13293 | 2021-11-04 15:59:43 |
| R77.htm | 165540 | 2021-11-04 15:59:43 |
| R78.htm | 9278 | 2021-11-04 15:59:43 |
| R79.htm | 55453 | 2021-11-04 15:59:43 |
| R8.htm | 99767 | 2021-11-04 15:59:43 |
| R80.htm | 9972 | 2021-11-04 15:59:43 |
| R81.htm | 88747 | 2021-11-04 15:59:43 |
| R9.htm | 7892 | 2021-11-04 15:59:43 |
| R9999.htm | 21639 | 2021-11-04 15:59:43 |
| report.css | 2768 | 2021-11-04 15:59:43 |
| Show.js | 1086 | 2021-11-04 15:59:43 |
| zions-20210930.htm | 7691242 | 2021-11-04 15:59:43 |
| zions-20210930.xsd | 84902 | 2021-11-04 15:59:43 |
| zions-20210930_cal.xml | 187547 | 2021-11-04 15:59:43 |
| zions-20210930_def.xml | 522337 | 2021-11-04 15:59:43 |
 zions-20210930_g1.jpg | 17994 | 2021-11-04 15:59:43 |
 zions-20210930_g10.jpg | 69999 | 2021-11-04 15:59:43 |
 zions-20210930_g11.jpg | 56449 | 2021-11-04 15:59:43 |
 zions-20210930_g2.jpg | 18373 | 2021-11-04 15:59:43 |
 zions-20210930_g3.jpg | 19281 | 2021-11-04 15:59:43 |
 zions-20210930_g4.jpg | 19498 | 2021-11-04 15:59:43 |
 zions-20210930_g5.jpg | 77790 | 2021-11-04 15:59:43 |
 zions-20210930_g6.jpg | 62800 | 2021-11-04 15:59:43 |
 zions-20210930_g7.jpg | 67058 | 2021-11-04 15:59:43 |
 zions-20210930_g8.jpg | 55886 | 2021-11-04 15:59:43 |
 zions-20210930_g9.jpg | 56069 | 2021-11-04 15:59:43 |
| zions-20210930_htm.xml | 9098177 | 2021-11-04 15:59:43 |
| zions-20210930_lab.xml | 1063697 | 2021-11-04 15:59:43 |
| zions-20210930_pre.xml | 760910 | 2021-11-04 15:59:43 |