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| 0000947484-20-000003.txt | 2020-02-11 16:37:07 | |
 0000947484-20-000003-xbrl.zip | 168914 | 2020-02-11 16:37:07 |
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| acgl-20200211.xsd | 4945 | 2020-02-11 16:37:07 |
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 archlogorgbsolida38.jpg | 69418 | 2020-02-11 16:37:07 |
 banner1a21.jpg | 4775 | 2020-02-11 16:37:07 |
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| ex-992supplement123119.htm | 5090981 | 2020-02-11 16:37:07 |
| FilingSummary.xml | 1922 | 2020-02-11 16:37:07 |
| Financial_Report.xlsx | 6051 | 2020-02-11 16:37:07 |
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| R1.htm | 48199 | 2020-02-11 16:37:07 |
| report.css | 2767 | 2020-02-11 16:37:07 |
| Show.js | 1085 | 2020-02-11 16:37:07 |