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| 0000947484-20-000034-index.html | 2020-05-04 16:19:13 | |
| 0000947484-20-000034.txt | 2020-05-04 16:19:13 | |
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| a8-k33120.htm | 50246 | 2020-05-04 16:19:13 |
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| acgl-20200331.xsd | 4807 | 2020-05-04 16:19:13 |
| acgl-20200331_cal.xml | 700 | 2020-05-04 16:19:13 |
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| acgl-20200331_pre.xml | 18569 | 2020-05-04 16:19:13 |
 archlogorgbsolida37.jpg | 69418 | 2020-05-04 16:19:13 |
 archlogorgbsolida38.jpg | 69418 | 2020-05-04 16:19:13 |
 banner1a21.jpg | 4775 | 2020-05-04 16:19:13 |
| ex-991release33120.htm | 575711 | 2020-05-04 16:19:13 |
| ex-992supplement33120.htm | 4002271 | 2020-05-04 16:19:13 |
| FilingSummary.xml | 1912 | 2020-05-04 16:19:13 |
| Financial_Report.xlsx | 6053 | 2020-05-04 16:19:13 |
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| R1.htm | 48193 | 2020-05-04 16:19:13 |
| report.css | 2767 | 2020-05-04 16:19:13 |
| Show.js | 1085 | 2020-05-04 16:19:13 |