Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000811156-20-000004-index-headers.html | 2020-02-06 08:59:52 | |
| 0000811156-20-000004-index.html | 2020-02-06 08:59:52 | |
| 0000811156-20-000004.txt | 2020-02-06 08:59:52 | |
 0000811156-20-000004-xbrl.zip | 2039183 | 2020-02-06 08:59:52 |
| a2019form10-kxcmsenerg.htm | 8177103 | 2020-02-06 08:59:52 |
| a2019form10-kxcmsenerg_htm.xml | 15414703 | 2020-02-06 08:59:52 |
 chart-cecapacitymix.jpg | 61554 | 2020-02-06 08:59:52 |
 chart-cecapitalexpenditures.jpg | 32139 | 2020-02-06 08:59:52 |
 chart-ceelectricutiloperrev.jpg | 34482 | 2020-02-06 08:59:52 |
 chart-cegasutiloperrev.jpg | 40168 | 2020-02-06 08:59:52 |
 chart-cegasutilsupplagreemts.jpg | 37292 | 2020-02-06 08:59:52 |
 chart-ceweathnormelectricdel.jpg | 79143 | 2020-02-06 08:59:52 |
 chart-ceweathnormgasdeliv.jpg | 59886 | 2020-02-06 08:59:52 |
 chart-cms5ycumultotalreturn.jpg | 64190 | 2020-02-06 08:59:52 |
 chart-historicairemissions.jpg | 80426 | 2020-02-06 08:59:52 |
| cms-20191231.xsd | 151157 | 2020-02-06 08:59:52 |
| cms-20191231_cal.xml | 218694 | 2020-02-06 08:59:52 |
| cms-20191231_def.xml | 1379776 | 2020-02-06 08:59:52 |
| cms-20191231_lab.xml | 1881229 | 2020-02-06 08:59:52 |
| cms-20191231_pre.xml | 1481044 | 2020-02-06 08:59:52 |
| ex101012312019.htm | 97340 | 2020-02-06 08:59:52 |
| ex101212312019.htm | 102024 | 2020-02-06 08:59:52 |
| ex101312312019.htm | 127715 | 2020-02-06 08:59:52 |
| ex10612312019.htm | 136905 | 2020-02-06 08:59:52 |
| ex21112312019.htm | 63817 | 2020-02-06 08:59:52 |
| ex23112312019.htm | 2411 | 2020-02-06 08:59:52 |
| ex23212312019.htm | 2234 | 2020-02-06 08:59:52 |
| ex31112312019.htm | 11078 | 2020-02-06 08:59:52 |
| ex31212312019.htm | 11103 | 2020-02-06 08:59:52 |
| ex31312312019.htm | 11077 | 2020-02-06 08:59:52 |
| ex31412312019.htm | 11078 | 2020-02-06 08:59:52 |
| ex32112312019.htm | 9331 | 2020-02-06 08:59:52 |
| ex32212312019.htm | 9431 | 2020-02-06 08:59:52 |
| ex4612312019.htm | 125285 | 2020-02-06 08:59:52 |
| ex4712312019.htm | 46883 | 2020-02-06 08:59:52 |
| FilingSummary.xml | 91985 | 2020-02-06 08:59:52 |
| Financial_Report.xlsx | 224172 | 2020-02-06 08:59:52 |
 graphic-cmsppp.jpg | 15780 | 2020-02-06 08:59:52 |
 map-migeneratingfacilities.jpg | 1171667 | 2020-02-06 08:59:52 |
| MetaLinks.json | 1551476 | 2020-02-06 08:59:52 |
| R1.htm | 84968 | 2020-02-06 08:59:52 |
| R10.htm | 288006 | 2020-02-06 08:59:52 |
| R100.htm | 24508 | 2020-02-06 08:59:52 |
| R101.htm | 14359 | 2020-02-06 08:59:52 |
| R102.htm | 30184 | 2020-02-06 08:59:52 |
| R103.htm | 62984 | 2020-02-06 08:59:52 |
| R104.htm | 16807 | 2020-02-06 08:59:52 |
| R105.htm | 10626 | 2020-02-06 08:59:52 |
| R106.htm | 30949 | 2020-02-06 08:59:52 |
| R107.htm | 51189 | 2020-02-06 08:59:52 |
| R108.htm | 47767 | 2020-02-06 08:59:52 |
| R109.htm | 35551 | 2020-02-06 08:59:52 |
| R11.htm | 49214 | 2020-02-06 08:59:52 |
| R110.htm | 9595 | 2020-02-06 08:59:52 |
| R111.htm | 12947 | 2020-02-06 08:59:52 |
| R112.htm | 14190 | 2020-02-06 08:59:52 |
| R113.htm | 21071 | 2020-02-06 08:59:52 |
| R114.htm | 56231 | 2020-02-06 08:59:52 |
| R115.htm | 30002 | 2020-02-06 08:59:52 |
| R116.htm | 39756 | 2020-02-06 08:59:52 |
| R117.htm | 24193 | 2020-02-06 08:59:52 |
| R118.htm | 15802 | 2020-02-06 08:59:52 |
| R119.htm | 39092 | 2020-02-06 08:59:52 |
| R12.htm | 307788 | 2020-02-06 08:59:52 |
| R120.htm | 93498 | 2020-02-06 08:59:52 |
| R121.htm | 12663 | 2020-02-06 08:59:52 |
| R122.htm | 17301 | 2020-02-06 08:59:52 |
| R123.htm | 19266 | 2020-02-06 08:59:52 |
| R124.htm | 115676 | 2020-02-06 08:59:52 |
| R125.htm | 31598 | 2020-02-06 08:59:52 |
| R126.htm | 7975 | 2020-02-06 08:59:52 |
| R127.htm | 14866 | 2020-02-06 08:59:52 |
| R128.htm | 38158 | 2020-02-06 08:59:52 |
| R129.htm | 40402 | 2020-02-06 08:59:52 |
| R13.htm | 690163 | 2020-02-06 08:59:52 |
| R130.htm | 20593 | 2020-02-06 08:59:52 |
| R131.htm | 24071 | 2020-02-06 08:59:52 |
| R132.htm | 59704 | 2020-02-06 08:59:52 |
| R133.htm | 45311 | 2020-02-06 08:59:52 |
| R134.htm | 77415 | 2020-02-06 08:59:52 |
| R14.htm | 123893 | 2020-02-06 08:59:52 |
| R15.htm | 302377 | 2020-02-06 08:59:52 |
| R16.htm | 91729 | 2020-02-06 08:59:52 |
| R17.htm | 529249 | 2020-02-06 08:59:52 |
| R18.htm | 313401 | 2020-02-06 08:59:52 |
| R19.htm | 259606 | 2020-02-06 08:59:52 |
| R2.htm | 110538 | 2020-02-06 08:59:52 |
| R20.htm | 1212711 | 2020-02-06 08:59:52 |
| R21.htm | 221432 | 2020-02-06 08:59:52 |
| R22.htm | 492325 | 2020-02-06 08:59:52 |
| R23.htm | 39581 | 2020-02-06 08:59:52 |
| R24.htm | 304741 | 2020-02-06 08:59:52 |
| R25.htm | 71097 | 2020-02-06 08:59:52 |
| R26.htm | 47264 | 2020-02-06 08:59:52 |
| R27.htm | 613018 | 2020-02-06 08:59:52 |
| R28.htm | 20867 | 2020-02-06 08:59:52 |
| R29.htm | 17616 | 2020-02-06 08:59:52 |
| R3.htm | 55274 | 2020-02-06 08:59:52 |
| R30.htm | 17891 | 2020-02-06 08:59:52 |
| R31.htm | 190856 | 2020-02-06 08:59:52 |
| R32.htm | 144037 | 2020-02-06 08:59:52 |
| R33.htm | 195647 | 2020-02-06 08:59:52 |
| R34.htm | 135060 | 2020-02-06 08:59:52 |
| R35.htm | 110567 | 2020-02-06 08:59:52 |
| R36.htm | 195721 | 2020-02-06 08:59:52 |
| R37.htm | 454956 | 2020-02-06 08:59:52 |
| R38.htm | 102341 | 2020-02-06 08:59:52 |
| R39.htm | 278251 | 2020-02-06 08:59:52 |
| R4.htm | 27095 | 2020-02-06 08:59:52 |
| R40.htm | 68172 | 2020-02-06 08:59:52 |
| R41.htm | 487440 | 2020-02-06 08:59:52 |
| R42.htm | 318468 | 2020-02-06 08:59:52 |
| R43.htm | 258729 | 2020-02-06 08:59:52 |
| R44.htm | 1039504 | 2020-02-06 08:59:52 |
| R45.htm | 205845 | 2020-02-06 08:59:52 |
| R46.htm | 490783 | 2020-02-06 08:59:52 |
| R47.htm | 37007 | 2020-02-06 08:59:52 |
| R48.htm | 286672 | 2020-02-06 08:59:52 |
| R49.htm | 69309 | 2020-02-06 08:59:52 |
| R5.htm | 112331 | 2020-02-06 08:59:52 |
| R50.htm | 44082 | 2020-02-06 08:59:52 |
| R51.htm | 597559 | 2020-02-06 08:59:52 |
| R52.htm | 13360 | 2020-02-06 08:59:52 |
| R53.htm | 18378 | 2020-02-06 08:59:52 |
| R54.htm | 190373 | 2020-02-06 08:59:52 |
| R55.htm | 13717 | 2020-02-06 08:59:52 |
| R56.htm | 64547 | 2020-02-06 08:59:52 |
| R57.htm | 206035 | 2020-02-06 08:59:52 |
| R58.htm | 13058 | 2020-02-06 08:59:52 |
| R59.htm | 85148 | 2020-02-06 08:59:52 |
| R6.htm | 169616 | 2020-02-06 08:59:52 |
| R60.htm | 18786 | 2020-02-06 08:59:52 |
| R61.htm | 79260 | 2020-02-06 08:59:52 |
| R62.htm | 176726 | 2020-02-06 08:59:52 |
| R63.htm | 40167 | 2020-02-06 08:59:52 |
| R64.htm | 43401 | 2020-02-06 08:59:52 |
| R65.htm | 17998 | 2020-02-06 08:59:52 |
| R66.htm | 35404 | 2020-02-06 08:59:52 |
| R67.htm | 14463 | 2020-02-06 08:59:52 |
| R68.htm | 16254 | 2020-02-06 08:59:52 |
| R69.htm | 39182 | 2020-02-06 08:59:52 |
| R7.htm | 14883 | 2020-02-06 08:59:52 |
| R70.htm | 22936 | 2020-02-06 08:59:52 |
| R71.htm | 53378 | 2020-02-06 08:59:52 |
| R72.htm | 22627 | 2020-02-06 08:59:52 |
| R73.htm | 10964 | 2020-02-06 08:59:52 |
| R74.htm | 10667 | 2020-02-06 08:59:52 |
| R75.htm | 26157 | 2020-02-06 08:59:52 |
| R76.htm | 33124 | 2020-02-06 08:59:52 |
| R77.htm | 14783 | 2020-02-06 08:59:52 |
| R78.htm | 118175 | 2020-02-06 08:59:52 |
| R79.htm | 51477 | 2020-02-06 08:59:52 |
| R8.htm | 152090 | 2020-02-06 08:59:52 |
| R80.htm | 9739 | 2020-02-06 08:59:52 |
| R81.htm | 10764 | 2020-02-06 08:59:52 |
| R82.htm | 15452 | 2020-02-06 08:59:52 |
| R83.htm | 11606 | 2020-02-06 08:59:52 |
| R84.htm | 23869 | 2020-02-06 08:59:52 |
| R85.htm | 16750 | 2020-02-06 08:59:52 |
| R86.htm | 20941 | 2020-02-06 08:59:52 |
| R87.htm | 43791 | 2020-02-06 08:59:52 |
| R88.htm | 18859 | 2020-02-06 08:59:52 |
| R89.htm | 11921 | 2020-02-06 08:59:52 |
| R9.htm | 17784 | 2020-02-06 08:59:52 |
| R90.htm | 60142 | 2020-02-06 08:59:52 |
| R91.htm | 38580 | 2020-02-06 08:59:52 |
| R92.htm | 16718 | 2020-02-06 08:59:52 |
| R93.htm | 47936 | 2020-02-06 08:59:52 |
| R94.htm | 42733 | 2020-02-06 08:59:52 |
| R95.htm | 120960 | 2020-02-06 08:59:52 |
| R96.htm | 17455 | 2020-02-06 08:59:52 |
| R97.htm | 34502 | 2020-02-06 08:59:52 |
| R98.htm | 34087 | 2020-02-06 08:59:52 |
| R99.htm | 67512 | 2020-02-06 08:59:52 |
| R9999.htm | 15543 | 2020-02-06 08:59:52 |
| report.css | 2767 | 2020-02-06 08:59:52 |
| Show.js | 1085 | 2020-02-06 08:59:52 |