Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000072741-21-000019-index-headers.html | 2021-08-06 14:37:31 | |
| 0000072741-21-000019-index.html | 2021-08-06 14:37:31 | |
| 0000072741-21-000019.txt | 2021-08-06 14:37:31 | |
 0000072741-21-000019-xbrl.zip | 634209 | 2021-08-06 14:37:31 |
| es-20210630.htm | 5691883 | 2021-08-06 14:37:31 |
| es-20210630.xsd | 83414 | 2021-08-06 14:37:31 |
| es-20210630_cal.xml | 120031 | 2021-08-06 14:37:31 |
| es-20210630_def.xml | 549724 | 2021-08-06 14:37:31 |
 es-20210630_g1.jpg | 11070 | 2021-08-06 14:37:31 |
| es-20210630_htm.xml | 5538198 | 2021-08-06 14:37:31 |
| es-20210630_lab.xml | 850223 | 2021-08-06 14:37:31 |
| es-20210630_pre.xml | 653944 | 2021-08-06 14:37:31 |
| FilingSummary.xml | 56963 | 2021-08-06 14:37:31 |
| Financial_Report.xlsx | 173164 | 2021-08-06 14:37:31 |
| MetaLinks.json | 931807 | 2021-08-06 14:37:31 |
| q2202110q-ex311xeversource.htm | 10611 | 2021-08-06 14:37:31 |
| q2202110q-ex31xeversource.htm | 10594 | 2021-08-06 14:37:31 |
| q2202110q-ex32xeversource.htm | 7628 | 2021-08-06 14:37:31 |
| q2202110q-exhibit311xclp.htm | 10653 | 2021-08-06 14:37:31 |
| q2202110q-exhibit311xnste.htm | 10647 | 2021-08-06 14:37:31 |
| q2202110q-exhibit311xpsnh.htm | 10655 | 2021-08-06 14:37:31 |
| q2202110q-exhibit31xclp.htm | 10555 | 2021-08-06 14:37:31 |
| q2202110q-exhibit31xnste.htm | 10549 | 2021-08-06 14:37:31 |
| q2202110q-exhibit31xpsnh.htm | 10557 | 2021-08-06 14:37:31 |
| q2202110q-exhibit32xclp.htm | 7560 | 2021-08-06 14:37:31 |
| q2202110q-exhibit32xnste.htm | 7555 | 2021-08-06 14:37:31 |
| q2202110q-exhibit32xpsnh.htm | 7562 | 2021-08-06 14:37:31 |
| R1.htm | 75388 | 2021-08-06 14:37:31 |
| R10.htm | 108553 | 2021-08-06 14:37:31 |
| R11.htm | 55123 | 2021-08-06 14:37:31 |
| R12.htm | 72456 | 2021-08-06 14:37:31 |
| R13.htm | 48493 | 2021-08-06 14:37:31 |
| R14.htm | 48139 | 2021-08-06 14:37:31 |
| R15.htm | 23814 | 2021-08-06 14:37:31 |
| R16.htm | 146448 | 2021-08-06 14:37:31 |
| R17.htm | 68652 | 2021-08-06 14:37:31 |
| R18.htm | 43718 | 2021-08-06 14:37:31 |
| R19.htm | 35812 | 2021-08-06 14:37:31 |
| R2.htm | 192694 | 2021-08-06 14:37:31 |
| R20.htm | 23072 | 2021-08-06 14:37:31 |
| R21.htm | 23158 | 2021-08-06 14:37:31 |
| R22.htm | 28036 | 2021-08-06 14:37:31 |
| R23.htm | 280016 | 2021-08-06 14:37:31 |
| R24.htm | 158634 | 2021-08-06 14:37:31 |
| R25.htm | 12241 | 2021-08-06 14:37:31 |
| R26.htm | 41486 | 2021-08-06 14:37:31 |
| R27.htm | 299495 | 2021-08-06 14:37:31 |
| R28.htm | 101758 | 2021-08-06 14:37:31 |
| R29.htm | 54692 | 2021-08-06 14:37:31 |
| R3.htm | 8541 | 2021-08-06 14:37:31 |
| R30.htm | 68496 | 2021-08-06 14:37:31 |
| R31.htm | 44066 | 2021-08-06 14:37:31 |
| R32.htm | 43729 | 2021-08-06 14:37:31 |
| R33.htm | 25736 | 2021-08-06 14:37:31 |
| R34.htm | 141821 | 2021-08-06 14:37:31 |
| R35.htm | 49283 | 2021-08-06 14:37:31 |
| R36.htm | 40114 | 2021-08-06 14:37:31 |
| R37.htm | 34720 | 2021-08-06 14:37:31 |
| R38.htm | 20674 | 2021-08-06 14:37:31 |
| R39.htm | 26272 | 2021-08-06 14:37:31 |
| R4.htm | 106171 | 2021-08-06 14:37:31 |
| R40.htm | 277270 | 2021-08-06 14:37:31 |
| R41.htm | 152030 | 2021-08-06 14:37:31 |
| R42.htm | 10990 | 2021-08-06 14:37:31 |
| R43.htm | 46917 | 2021-08-06 14:37:31 |
| R44.htm | 65770 | 2021-08-06 14:37:31 |
| R45.htm | 54171 | 2021-08-06 14:37:31 |
| R46.htm | 7436 | 2021-08-06 14:37:31 |
| R47.htm | 11278 | 2021-08-06 14:37:31 |
| R48.htm | 39589 | 2021-08-06 14:37:31 |
| R49.htm | 62700 | 2021-08-06 14:37:31 |
| R5.htm | 48971 | 2021-08-06 14:37:31 |
| R50.htm | 28175 | 2021-08-06 14:37:31 |
| R51.htm | 47612 | 2021-08-06 14:37:31 |
| R52.htm | 43638 | 2021-08-06 14:37:31 |
| R53.htm | 37072 | 2021-08-06 14:37:31 |
| R54.htm | 24479 | 2021-08-06 14:37:31 |
| R55.htm | 18644 | 2021-08-06 14:37:31 |
| R56.htm | 12385 | 2021-08-06 14:37:31 |
| R57.htm | 12078 | 2021-08-06 14:37:31 |
| R58.htm | 12025 | 2021-08-06 14:37:31 |
| R59.htm | 30545 | 2021-08-06 14:37:31 |
| R6.htm | 153885 | 2021-08-06 14:37:31 |
| R60.htm | 24166 | 2021-08-06 14:37:31 |
| R61.htm | 50126 | 2021-08-06 14:37:31 |
| R62.htm | 13275 | 2021-08-06 14:37:31 |
| R63.htm | 50288 | 2021-08-06 14:37:31 |
| R64.htm | 9398 | 2021-08-06 14:37:31 |
| R65.htm | 38768 | 2021-08-06 14:37:31 |
| R66.htm | 13868 | 2021-08-06 14:37:31 |
| R67.htm | 56229 | 2021-08-06 14:37:31 |
| R68.htm | 8956 | 2021-08-06 14:37:31 |
| R69.htm | 13832 | 2021-08-06 14:37:31 |
| R7.htm | 6778 | 2021-08-06 14:37:31 |
| R70.htm | 7183 | 2021-08-06 14:37:31 |
| R71.htm | 28752 | 2021-08-06 14:37:31 |
| R72.htm | 9465 | 2021-08-06 14:37:31 |
| R73.htm | 38042 | 2021-08-06 14:37:31 |
| R74.htm | 52241 | 2021-08-06 14:37:31 |
| R75.htm | 4119 | 2021-08-06 14:37:31 |
| R76.htm | 25786 | 2021-08-06 14:37:31 |
| R77.htm | 35522 | 2021-08-06 14:37:31 |
| R78.htm | 43491 | 2021-08-06 14:37:31 |
| R79.htm | 18362 | 2021-08-06 14:37:31 |
| R8.htm | 134370 | 2021-08-06 14:37:31 |
| R80.htm | 6884 | 2021-08-06 14:37:31 |
| R81.htm | 9143 | 2021-08-06 14:37:31 |
| R82.htm | 5100 | 2021-08-06 14:37:31 |
| R83.htm | 40332 | 2021-08-06 14:37:31 |
| R84.htm | 171465 | 2021-08-06 14:37:31 |
| R85.htm | 12956 | 2021-08-06 14:37:31 |
| R86.htm | 79483 | 2021-08-06 14:37:31 |
| R87.htm | 7845 | 2021-08-06 14:37:31 |
| R88.htm | 22904 | 2021-08-06 14:37:31 |
| R9.htm | 318207 | 2021-08-06 14:37:31 |
| R9999.htm | 27010 | 2021-08-06 14:37:31 |
| report.css | 2768 | 2021-08-06 14:37:31 |
| Show.js | 1086 | 2021-08-06 14:37:31 |