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| 0000011544-21-000075-index.html | 2021-10-21 16:13:10 | |
| 0000011544-21-000075.txt | 2021-10-21 16:13:10 | |
 0000011544-21-000075-xbrl.zip | 32238 | 2021-10-21 16:13:10 |
| FilingSummary.xml | 1755 | 2021-10-21 16:13:10 |
| Financial_Report.xlsx | 5932 | 2021-10-21 16:13:10 |
| MetaLinks.json | 22789 | 2021-10-21 16:13:10 |
| R1.htm | 48588 | 2021-10-21 16:13:10 |
| report.css | 2767 | 2021-10-21 16:13:10 |
| Show.js | 1085 | 2021-10-21 16:13:10 |
| wrb-20211021.htm | 51721 | 2021-10-21 16:13:10 |
| wrb-20211021.xsd | 3723 | 2021-10-21 16:13:10 |
| wrb-20211021_def.xml | 17168 | 2021-10-21 16:13:10 |
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| wrb-20211021_lab.xml | 35637 | 2021-10-21 16:13:10 |
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| wrb93020218-kex991.htm | 319834 | 2021-10-21 16:13:10 |