Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-11-062033-index-headers.html | 2011-11-08 14:12:58 | |
| 0001104659-11-062033-index.html | 2011-11-08 14:12:58 | |
| 0001104659-11-062033.txt | 2011-11-08 14:12:58 | |
 0001104659-11-062033-xbrl.zip | 182404 | 2011-11-08 14:12:58 |
| a11-25791_110q.htm | 3113790 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d1.htm | 40771 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d10.htm | 48898 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d11.htm | 48852 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d12.htm | 48939 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d2.htm | 40360 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d3.htm | 40391 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d4.htm | 40763 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d5.htm | 40856 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d6.htm | 49325 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d7.htm | 48955 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d8.htm | 48832 | 2011-11-08 14:12:58 |
| a11-25791_1ex10d9.htm | 48905 | 2011-11-08 14:12:58 |
| a11-25791_1ex15.htm | 4167 | 2011-11-08 14:12:58 |
| a11-25791_1ex31d1.htm | 13624 | 2011-11-08 14:12:58 |
| a11-25791_1ex31d2.htm | 14241 | 2011-11-08 14:12:58 |
| a11-25791_1ex32d1.htm | 7975 | 2011-11-08 14:12:58 |
| a11-25791_1ex32d2.htm | 8245 | 2011-11-08 14:12:58 |
| acgl-20110930.xml | 2596191 | 2011-11-08 14:12:58 |
| acgl-20110930.xsd | 47221 | 2011-11-08 14:12:58 |
| acgl-20110930_cal.xml | 99269 | 2011-11-08 14:12:58 |
| acgl-20110930_def.xml | 259568 | 2011-11-08 14:12:58 |
| acgl-20110930_lab.xml | 408827 | 2011-11-08 14:12:58 |
| acgl-20110930_pre.xml | 423147 | 2011-11-08 14:12:58 |
| FilingSummary.xml | 21937 | 2011-11-08 14:12:58 |
| Financial_Report.xls | 1973914 | 2011-11-08 14:12:58 |
 g257911lgi001.jpg | 2227 | 2011-11-08 14:12:58 |
| R1.htm | 22740 | 2011-11-08 14:12:58 |
| R10.htm | 18791 | 2011-11-08 14:12:58 |
| R11.htm | 14907 | 2011-11-08 14:12:58 |
| R12.htm | 190100 | 2011-11-08 14:12:58 |
| R13.htm | 342421 | 2011-11-08 14:12:58 |
| R14.htm | 240490 | 2011-11-08 14:12:58 |
| R15.htm | 52593 | 2011-11-08 14:12:58 |
| R16.htm | 47912 | 2011-11-08 14:12:58 |
| R17.htm | 4402 | 2011-11-08 14:12:58 |
| R18.htm | 17994 | 2011-11-08 14:12:58 |
| R19.htm | 7592 | 2011-11-08 14:12:58 |
| R2.htm | 148275 | 2011-11-08 14:12:58 |
| R20.htm | 183616 | 2011-11-08 14:12:58 |
| R21.htm | 343990 | 2011-11-08 14:12:58 |
| R22.htm | 211086 | 2011-11-08 14:12:58 |
| R23.htm | 48137 | 2011-11-08 14:12:58 |
| R24.htm | 44134 | 2011-11-08 14:12:58 |
| R25.htm | 26267 | 2011-11-08 14:12:58 |
| R26.htm | 34866 | 2011-11-08 14:12:58 |
| R27.htm | 92767 | 2011-11-08 14:12:58 |
| R28.htm | 49238 | 2011-11-08 14:12:58 |
| R29.htm | 53518 | 2011-11-08 14:12:58 |
| R3.htm | 25210 | 2011-11-08 14:12:58 |
| R30.htm | 49888 | 2011-11-08 14:12:58 |
| R31.htm | 14741 | 2011-11-08 14:12:58 |
| R32.htm | 16260 | 2011-11-08 14:12:58 |
| R33.htm | 24544 | 2011-11-08 14:12:58 |
| R34.htm | 13930 | 2011-11-08 14:12:58 |
| R35.htm | 18408 | 2011-11-08 14:12:58 |
| R36.htm | 7979 | 2011-11-08 14:12:58 |
| R37.htm | 16938 | 2011-11-08 14:12:58 |
| R38.htm | 83769 | 2011-11-08 14:12:58 |
| R39.htm | 33148 | 2011-11-08 14:12:58 |
| R4.htm | 104521 | 2011-11-08 14:12:58 |
| R40.htm | 22702 | 2011-11-08 14:12:58 |
| R41.htm | 35571 | 2011-11-08 14:12:58 |
| R42.htm | 46423 | 2011-11-08 14:12:58 |
| R43.htm | 14144 | 2011-11-08 14:12:58 |
| R5.htm | 45365 | 2011-11-08 14:12:58 |
| R6.htm | 60171 | 2011-11-08 14:12:58 |
| R7.htm | 124551 | 2011-11-08 14:12:58 |
| R8.htm | 13335 | 2011-11-08 14:12:58 |
| R9.htm | 9087 | 2011-11-08 14:12:58 |
| report.css | 2721 | 2011-11-08 14:12:58 |
| Show.js | 6423 | 2011-11-08 14:12:58 |