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| Seq | Description | Type | Size | |
|---|---|---|---|---|
| 1 | 10-K/A | 10-K/A | 948.1 KB | Open in viewerDownload |
| 2 | EX-31.1 | EX-31.1 | 3.4 KB | Open in viewerDownload |
| 3 | EX-31.2 | EX-31.2 | 3.4 KB | Open in viewerDownload |
| 4 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | EX-101.SCH | 2.1 KB | Download |
| 5 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | EX-101.DEF | 22.3 KB | Download |
| 6 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | EX-101.LAB | 40.1 KB | Download |
| 7 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | EX-101.PRE | 23.8 KB | Download |
| 8 | wbs-20251231_g1.jpg | GRAPHIC | 22.4 KB | Open in viewerDownload |
| 9 | wbs-20251231_g2.jpg | GRAPHIC | 21.1 KB | Open in viewerDownload |
| 10 | wbs-20251231_g3.jpg | GRAPHIC | 26.9 KB | Open in viewerDownload |
| 11 | wbs-20251231_g4.jpg | GRAPHIC | 105.3 KB | Open in viewerDownload |
| 12 | wbs-20251231_g5.jpg | GRAPHIC | 103.3 KB | Open in viewerDownload |
| 14 | IDEA: XBRL DOCUMENT | HTML | 76.3 KB | Open in viewerDownload |
| 15 | IDEA: XBRL DOCUMENT | CSS | 2.6 KB | Download |
| 16 | IDEA: XBRL DOCUMENT | JS | 0.9 KB | Download |
| 18 | IDEA: XBRL DOCUMENT | XML | 1.9 KB | Download |
| 20 | IDEA: XBRL DOCUMENT | JSON | 30.5 KB | Download |
| 21 | IDEA: XBRL DOCUMENT | ZIP | 310.3 KB | Download |
| 22 | IDEA: XBRL DOCUMENT | XML | 11.2 KB | Download |
| 999 | Full raw SEC SGML submission | Full Submission Text | 1981.5 KB | Open in viewerDownload |
