Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000803649-20-000038-index-headers.html | 2020-02-13 16:23:06 | |
| 0000803649-20-000038-index.html | 2020-02-13 16:23:06 | |
| 0000803649-20-000038.txt | 2020-02-13 16:23:06 | |
 0000803649-20-000038-xbrl.zip | 498353 | 2020-02-13 16:23:06 |
| eqc-20191231.htm | 3463901 | 2020-02-13 16:23:06 |
| eqc-20191231.xsd | 76930 | 2020-02-13 16:23:06 |
| eqc-20191231_cal.xml | 126284 | 2020-02-13 16:23:06 |
| eqc-20191231_def.xml | 443352 | 2020-02-13 16:23:06 |
 eqc-20191231_g1.jpg | 45163 | 2020-02-13 16:23:06 |
| eqc-20191231_htm.xml | 2277458 | 2020-02-13 16:23:06 |
| eqc-20191231_lab.xml | 892781 | 2020-02-13 16:23:06 |
| eqc-20191231_pre.xml | 609350 | 2020-02-13 16:23:06 |
| eqc123119exhibit1018.htm | 15867 | 2020-02-13 16:23:06 |
| eqc123119exhibit211.htm | 15671 | 2020-02-13 16:23:06 |
| eqc123119exhibit231.htm | 2894 | 2020-02-13 16:23:06 |
| eqc123119exhibit311.htm | 17200 | 2020-02-13 16:23:06 |
| eqc123119exhibit312.htm | 18521 | 2020-02-13 16:23:06 |
| eqc123119exhibit321.htm | 10384 | 2020-02-13 16:23:06 |
| eqc12312019exhibit43.htm | 210130 | 2020-02-13 16:23:06 |
| FilingSummary.xml | 51465 | 2020-02-13 16:23:06 |
| Financial_Report.xlsx | 106798 | 2020-02-13 16:23:06 |
| MetaLinks.json | 809296 | 2020-02-13 16:23:06 |
| R1.htm | 66527 | 2020-02-13 16:23:06 |
| R10.htm | 32335 | 2020-02-13 16:23:06 |
| R11.htm | 104862 | 2020-02-13 16:23:06 |
| R12.htm | 16233 | 2020-02-13 16:23:06 |
| R13.htm | 14966 | 2020-02-13 16:23:06 |
| R14.htm | 37660 | 2020-02-13 16:23:06 |
| R15.htm | 44726 | 2020-02-13 16:23:06 |
| R16.htm | 61960 | 2020-02-13 16:23:06 |
| R17.htm | 22900 | 2020-02-13 16:23:06 |
| R18.htm | 46252 | 2020-02-13 16:23:06 |
| R19.htm | 38852 | 2020-02-13 16:23:06 |
| R2.htm | 78864 | 2020-02-13 16:23:06 |
| R20.htm | 97647 | 2020-02-13 16:23:06 |
| R21.htm | 4751 | 2020-02-13 16:23:06 |
| R22.htm | 30497 | 2020-02-13 16:23:06 |
| R23.htm | 70230 | 2020-02-13 16:23:06 |
| R24.htm | 5491 | 2020-02-13 16:23:06 |
| R25.htm | 6726 | 2020-02-13 16:23:06 |
| R26.htm | 44499 | 2020-02-13 16:23:06 |
| R27.htm | 6022 | 2020-02-13 16:23:06 |
| R28.htm | 125147 | 2020-02-13 16:23:06 |
| R29.htm | 61992 | 2020-02-13 16:23:06 |
| R3.htm | 20950 | 2020-02-13 16:23:06 |
| R30.htm | 108031 | 2020-02-13 16:23:06 |
| R31.htm | 16216 | 2020-02-13 16:23:06 |
| R32.htm | 12956 | 2020-02-13 16:23:06 |
| R33.htm | 38028 | 2020-02-13 16:23:06 |
| R34.htm | 41717 | 2020-02-13 16:23:06 |
| R35.htm | 50451 | 2020-02-13 16:23:06 |
| R36.htm | 90082 | 2020-02-13 16:23:06 |
| R37.htm | 47664 | 2020-02-13 16:23:06 |
| R38.htm | 40341 | 2020-02-13 16:23:06 |
| R39.htm | 93647 | 2020-02-13 16:23:06 |
| R4.htm | 71433 | 2020-02-13 16:23:06 |
| R40.htm | 29063 | 2020-02-13 16:23:06 |
| R41.htm | 70600 | 2020-02-13 16:23:06 |
| R42.htm | 43559 | 2020-02-13 16:23:06 |
| R43.htm | 16113 | 2020-02-13 16:23:06 |
| R44.htm | 20138 | 2020-02-13 16:23:06 |
| R45.htm | 19384 | 2020-02-13 16:23:06 |
| R46.htm | 93103 | 2020-02-13 16:23:06 |
| R47.htm | 16822 | 2020-02-13 16:23:06 |
| R48.htm | 8894 | 2020-02-13 16:23:06 |
| R49.htm | 6422 | 2020-02-13 16:23:06 |
| R5.htm | 4883 | 2020-02-13 16:23:06 |
| R50.htm | 23548 | 2020-02-13 16:23:06 |
| R51.htm | 35632 | 2020-02-13 16:23:06 |
| R52.htm | 16080 | 2020-02-13 16:23:06 |
| R53.htm | 30078 | 2020-02-13 16:23:06 |
| R54.htm | 21121 | 2020-02-13 16:23:06 |
| R55.htm | 84031 | 2020-02-13 16:23:06 |
| R56.htm | 20497 | 2020-02-13 16:23:06 |
| R57.htm | 66136 | 2020-02-13 16:23:06 |
| R58.htm | 8170 | 2020-02-13 16:23:06 |
| R59.htm | 21475 | 2020-02-13 16:23:06 |
| R6.htm | 26682 | 2020-02-13 16:23:06 |
| R60.htm | 10729 | 2020-02-13 16:23:06 |
| R61.htm | 21912 | 2020-02-13 16:23:06 |
| R62.htm | 26841 | 2020-02-13 16:23:06 |
| R63.htm | 16317 | 2020-02-13 16:23:06 |
| R64.htm | 11994 | 2020-02-13 16:23:06 |
| R65.htm | 6466 | 2020-02-13 16:23:06 |
| R66.htm | 14382 | 2020-02-13 16:23:06 |
| R67.htm | 139001 | 2020-02-13 16:23:06 |
| R68.htm | 38368 | 2020-02-13 16:23:06 |
| R69.htm | 21357 | 2020-02-13 16:23:06 |
| R7.htm | 59720 | 2020-02-13 16:23:06 |
| R70.htm | 16535 | 2020-02-13 16:23:06 |
| R71.htm | 12238 | 2020-02-13 16:23:06 |
| R72.htm | 27645 | 2020-02-13 16:23:06 |
| R73.htm | 8392 | 2020-02-13 16:23:06 |
| R74.htm | 76343 | 2020-02-13 16:23:06 |
| R75.htm | 4414 | 2020-02-13 16:23:06 |
| R76.htm | 13523 | 2020-02-13 16:23:06 |
| R77.htm | 22017 | 2020-02-13 16:23:06 |
| R78.htm | 19260 | 2020-02-13 16:23:06 |
| R79.htm | 4707 | 2020-02-13 16:23:06 |
| R8.htm | 104029 | 2020-02-13 16:23:06 |
| R80.htm | 34316 | 2020-02-13 16:23:06 |
| R81.htm | 75127 | 2020-02-13 16:23:06 |
| R82.htm | 30349 | 2020-02-13 16:23:06 |
| R83.htm | 11940 | 2020-02-13 16:23:06 |
| R9.htm | 7334 | 2020-02-13 16:23:06 |
| report.css | 2767 | 2020-02-13 16:23:06 |
| Show.js | 1085 | 2020-02-13 16:23:06 |