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| 0001130310-22-000063.txt | 2022-05-03 06:18:33 | |
 0001130310-22-000063-xbrl.zip | 631958 | 2022-05-03 06:18:33 |
| cehe_exhibit3112x3312022.htm | 11486 | 2022-05-03 06:18:33 |
| cehe_exhibit3122x3312022.htm | 11455 | 2022-05-03 06:18:33 |
| cehe_exhibit3212x3312022.htm | 5764 | 2022-05-03 06:18:33 |
| cehe_exhibit3222x3312022.htm | 5791 | 2022-05-03 06:18:33 |
| cerc_exhibit3113x3312022.htm | 10451 | 2022-05-03 06:18:33 |
| cerc_exhibit3123x3312022.htm | 10545 | 2022-05-03 06:18:33 |
| cerc_exhibit3213x3312022.htm | 5619 | 2022-05-03 06:18:33 |
| cerc_exhibit3223x3312022.htm | 5277 | 2022-05-03 06:18:33 |
| cnp-20220331.htm | 4127947 | 2022-05-03 06:18:33 |
| cnp-20220331.xsd | 96794 | 2022-05-03 06:18:33 |
| cnp-20220331_cal.xml | 114502 | 2022-05-03 06:18:33 |
| cnp-20220331_def.xml | 827838 | 2022-05-03 06:18:33 |
| cnp-20220331_htm.xml | 3642005 | 2022-05-03 06:18:33 |
| cnp-20220331_lab.xml | 1066986 | 2022-05-03 06:18:33 |
| cnp-20220331_pre.xml | 980972 | 2022-05-03 06:18:33 |
| cnp_exhibit3111x3312022.htm | 11618 | 2022-05-03 06:18:33 |
| cnp_exhibit3121x3312022.htm | 11637 | 2022-05-03 06:18:33 |
| cnp_exhibit3211x3312022.htm | 5829 | 2022-05-03 06:18:33 |
| cnp_exhibit3221x3312022.htm | 5709 | 2022-05-03 06:18:33 |
| exhibit1011-secondamendment.htm | 10956 | 2022-05-03 06:18:33 |
| exhibit1014finalenableterm.htm | 10466 | 2022-05-03 06:18:33 |
| exhibit1018finalenableterm.htm | 10467 | 2022-05-03 06:18:33 |
| exhibit411officerscertific.htm | 148162 | 2022-05-03 06:18:33 |
| FilingSummary.xml | 63268 | 2022-05-03 06:18:33 |
| Financial_Report.xlsx | 172813 | 2022-05-03 06:18:33 |
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| report.css | 2768 | 2022-05-03 06:18:33 |
| Show.js | 1086 | 2022-05-03 06:18:33 |