Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-316965-index-headers.html | 2020-12-14 16:17:03 | |
| 0001193125-20-316965-index.html | 2020-12-14 16:17:03 | |
| 0001193125-20-316965.txt | 2020-12-14 16:17:03 | |
 0001193125-20-316965-xbrl.zip | 16431 | 2020-12-14 16:17:03 |
| ctl-20201214.xsd | 6233 | 2020-12-14 16:17:03 |
| ctl-20201214_cal.xml | 681 | 2020-12-14 16:17:03 |
| ctl-20201214_def.xml | 16216 | 2020-12-14 16:17:03 |
| ctl-20201214_lab.xml | 23634 | 2020-12-14 16:17:03 |
| ctl-20201214_pre.xml | 16720 | 2020-12-14 16:17:03 |
| d14040d8k.htm | 72749 | 2020-12-14 16:17:03 |
| d14040d8k_htm.xml | 11293 | 2020-12-14 16:17:03 |
| d14040dex991.htm | 6821 | 2020-12-14 16:17:03 |
| FilingSummary.xml | 1776 | 2020-12-14 16:17:03 |
| Financial_Report.xlsx | 6001 | 2020-12-14 16:17:03 |
 g14040g11a83.jpg | 1807 | 2020-12-14 16:17:03 |
 g14040g28i39.jpg | 2923 | 2020-12-14 16:17:03 |
| MetaLinks.json | 24928 | 2020-12-14 16:17:03 |
| R1.htm | 58462 | 2020-12-14 16:17:03 |
| report.css | 2767 | 2020-12-14 16:17:03 |
| Show.js | 1085 | 2020-12-14 16:17:03 |