[
  {
    "doc_id": "sec-edgar-8-k-2026-07-20-zion-20260720-htm",
    "title": "8-K – 2026-07-20 – zion-20260720.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938026000103/zion-20260720.htm",
    "date": "2026-07-20",
    "period": "2026-07-20",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zion-20260720.htm",
    "text_chars": 4457,
    "sha256": "8ac6d880ce0793d1a682e7817a4b3791a2cb2818281973f5dd9555ee52a18ea4",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-07-20-zion-20260720-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-07-20-zion-20260720-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-07-20-zion-20260720-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-07-20-zion-20260720-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-07-20-zion-20260720-htm/part-001.html",
        "chars": 4457
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-06-02-zion-20260602-htm",
    "title": "8-K – 2026-06-02 – zion-20260602.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938026000088/zion-20260602.htm",
    "date": "2026-06-02",
    "period": "2026-06-02",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zion-20260602.htm",
    "text_chars": 4623,
    "sha256": "5a8e5c1b9da7b2642c037ecb939a53030418b8eab65f2caae03f4e1ebae19c65",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-06-02-zion-20260602-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-06-02-zion-20260602-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-06-02-zion-20260602-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-06-02-zion-20260602-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-06-02-zion-20260602-htm/part-001.html",
        "chars": 4623
      }
    ]
  },
  {
    "doc_id": "sec-edgar-10-q-2026-05-07-zions-20260331-htm",
    "title": "10-Q – 2026-05-07 – zions-20260331.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938026000083/zions-20260331.htm",
    "date": "2026-05-07",
    "period": "2026-03-31",
    "form_type": "10-Q",
    "report_key": null,
    "filename": "zions-20260331.htm",
    "text_chars": 320852,
    "sha256": "1e1a3ce462727fc341d16c29c3fef6d901adfb93cae1a977caf01942a613fc4c",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2026-05-07-zions-20260331-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2026-05-07-zions-20260331-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2026-05-07-zions-20260331-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2026-05-07-zions-20260331-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2026-05-07-zions-20260331-htm/part-001.html",
        "chars": 179953
      },
      {
        "number": 2,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2026-05-07-zions-20260331-htm/part-002.html",
        "chars": 140897
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-05-04-zions-20260501-htm",
    "title": "8-K – 2026-05-04 – zions-20260501.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938026000077/zions-20260501.htm",
    "date": "2026-05-04",
    "period": "2026-05-01",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zions-20260501.htm",
    "text_chars": 4720,
    "sha256": "3e3e4db4360ffa6b0457f3ed6963aa355f9c30b5aa0cef655bb97614d7b50245",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zions-20260501-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zions-20260501-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zions-20260501-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zions-20260501-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zions-20260501-htm/part-001.html",
        "chars": 4720
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-05-04-zion-20260504-htm",
    "title": "8-K – 2026-05-04 – zion-20260504.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938026000078/zion-20260504.htm",
    "date": "2026-05-04",
    "period": "2026-05-04",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zion-20260504.htm",
    "text_chars": 3524,
    "sha256": "141640efa2b12daa3f9d43b8e0141ea7a1b4b4e4e3f0572cdbb60e35d8321d19",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zion-20260504-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zion-20260504-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zion-20260504-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zion-20260504-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-05-04-zion-20260504-htm/part-001.html",
        "chars": 3524
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-04-20-zion-20260420-htm",
    "title": "8-K – 2026-04-20 – zion-20260420.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938026000063/zion-20260420.htm",
    "date": "2026-04-20",
    "period": "2026-04-20",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zion-20260420.htm",
    "text_chars": 4464,
    "sha256": "db727cc0d1ee006703810238ea2c046f64db272e38da30502cac38c921e40b3f",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-04-20-zion-20260420-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-04-20-zion-20260420-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-04-20-zion-20260420-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-04-20-zion-20260420-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-04-20-zion-20260420-htm/part-001.html",
        "chars": 4464
      }
    ]
  },
  {
    "doc_id": "sec-edgar-10-k-2026-02-24-zions-20251231-htm",
    "title": "10-K – 2026-02-24 – zions-20251231.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938026000046/zions-20251231.htm",
    "date": "2026-02-24",
    "period": "2025-12-31",
    "form_type": "10-K",
    "report_key": null,
    "filename": "zions-20251231.htm",
    "text_chars": 621770,
    "sha256": "6d3da2d80df7bdfdd415642ef597fb74f4b9daacd6b186cb766ca01949ca6f9a",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-k-2026-02-24-zions-20251231-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-10-k-2026-02-24-zions-20251231-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-k-2026-02-24-zions-20251231-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-10-k-2026-02-24-zions-20251231-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-k-2026-02-24-zions-20251231-htm/part-001.html",
        "chars": 179417
      },
      {
        "number": 2,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-k-2026-02-24-zions-20251231-htm/part-002.html",
        "chars": 179016
      },
      {
        "number": 3,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-k-2026-02-24-zions-20251231-htm/part-003.html",
        "chars": 179939
      },
      {
        "number": 4,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-k-2026-02-24-zions-20251231-htm/part-004.html",
        "chars": 83392
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-01-20-zion-20260120-htm",
    "title": "8-K – 2026-01-20 – zion-20260120.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938026000009/zion-20260120.htm",
    "date": "2026-01-20",
    "period": "2026-01-20",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zion-20260120.htm",
    "text_chars": 4483,
    "sha256": "867805340767846297d2ebe7e5224a119712e977ec530a05af17515f23f0d03a",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-01-20-zion-20260120-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-01-20-zion-20260120-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-01-20-zion-20260120-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-01-20-zion-20260120-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2026-01-20-zion-20260120-htm/part-001.html",
        "chars": 4483
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2025-12-22-zion-20251222-htm",
    "title": "8-K – 2025-12-22 – zion-20251222.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938025000137/zion-20251222.htm",
    "date": "2025-12-22",
    "period": "2025-12-22",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zion-20251222.htm",
    "text_chars": 5481,
    "sha256": "c8769dd0cc3e75948041b303373676fe492c11552758cd4821ee231b59272f63",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-12-22-zion-20251222-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-12-22-zion-20251222-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-12-22-zion-20251222-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-12-22-zion-20251222-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-12-22-zion-20251222-htm/part-001.html",
        "chars": 5481
      }
    ]
  },
  {
    "doc_id": "sec-edgar-10-q-2025-11-06-zions-20250930-htm",
    "title": "10-Q – 2025-11-06 – zions-20250930.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938025000129/zions-20250930.htm",
    "date": "2025-11-06",
    "period": "2025-09-30",
    "form_type": "10-Q",
    "report_key": null,
    "filename": "zions-20250930.htm",
    "text_chars": 400794,
    "sha256": "d15efd96e2fd7db0211a2c7b0a07be1fd4d0f1b7a2807e878a1d6de1ae9df7e6",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-11-06-zions-20250930-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-11-06-zions-20250930-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-11-06-zions-20250930-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-11-06-zions-20250930-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-11-06-zions-20250930-htm/part-001.html",
        "chars": 179987
      },
      {
        "number": 2,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-11-06-zions-20250930-htm/part-002.html",
        "chars": 179534
      },
      {
        "number": 3,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-11-06-zions-20250930-htm/part-003.html",
        "chars": 41267
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2025-10-20-zion-20251020-htm",
    "title": "8-K – 2025-10-20 – zion-20251020.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938025000124/zion-20251020.htm",
    "date": "2025-10-20",
    "period": "2025-10-20",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zion-20251020.htm",
    "text_chars": 4484,
    "sha256": "803e5c20a689f02c8fc3ec4b93950fc464a507de0f15f1679f6b1c8bd82c7cd2",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-20-zion-20251020-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-20-zion-20251020-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-20-zion-20251020-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-20-zion-20251020-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-20-zion-20251020-htm/part-001.html",
        "chars": 4484
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2025-10-15-zion-20251015-htm",
    "title": "8-K – 2025-10-15 – zion-20251015.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938025000118/zion-20251015.htm",
    "date": "2025-10-15",
    "period": "2025-10-15",
    "form_type": "8-K",
    "report_key": null,
    "filename": "zion-20251015.htm",
    "text_chars": 7968,
    "sha256": "70ce00e7508deb46ae16552e725eb00beeb3a9e9f7350e8b03e3b67ed1261c26",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-15-zion-20251015-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-15-zion-20251015-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-15-zion-20251015-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-15-zion-20251015-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-8-k-2025-10-15-zion-20251015-htm/part-001.html",
        "chars": 7968
      }
    ]
  },
  {
    "doc_id": "sec-edgar-10-q-2025-08-07-zions-20250630-htm",
    "title": "10-Q – 2025-08-07 – zions-20250630.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/109380/000010938025000102/zions-20250630.htm",
    "date": "2025-08-07",
    "period": "2025-06-30",
    "form_type": "10-Q",
    "report_key": null,
    "filename": "zions-20250630.htm",
    "text_chars": 391172,
    "sha256": "2f9f10f29be882b3543c68eab45c8105a4b0b20e99c3fc6a601e3f3963f59d28",
    "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-08-07-zions-20250630-htm",
    "absolute_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-08-07-zions-20250630-htm",
    "txt_url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-08-07-zions-20250630-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-08-07-zions-20250630-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-08-07-zions-20250630-htm/part-001.html",
        "chars": 179380
      },
      {
        "number": 2,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-08-07-zions-20250630-htm/part-002.html",
        "chars": 177083
      },
      {
        "number": 3,
        "url": "/company/zions-bancorporation-n-a/documents/sec-edgar-10-q-2025-08-07-zions-20250630-htm/part-003.html",
        "chars": 34703
      }
    ]
  }
]