Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-183358-index-headers.html | 2020-06-30 08:01:25 | |
| 0001193125-20-183358-index.html | 2020-06-30 08:01:25 | |
| 0001193125-20-183358.txt | 2020-06-30 08:01:25 | |
 0001193125-20-183358-xbrl.zip | 14874 | 2020-06-30 08:01:25 |
| ctl-20200630.xsd | 4128 | 2020-06-30 08:01:25 |
| ctl-20200630_def.xml | 13398 | 2020-06-30 08:01:25 |
| ctl-20200630_lab.xml | 22008 | 2020-06-30 08:01:25 |
| ctl-20200630_pre.xml | 14301 | 2020-06-30 08:01:25 |
| d13997d8k.htm | 31147 | 2020-06-30 08:01:25 |
| d13997d8k_htm.xml | 5009 | 2020-06-30 08:01:25 |
| FilingSummary.xml | 1859 | 2020-06-30 08:01:25 |
| Financial_Report.xlsx | 5534 | 2020-06-30 08:01:25 |
 g13997g0627062223005.jpg | 3474 | 2020-06-30 08:01:25 |
| MetaLinks.json | 22064 | 2020-06-30 08:01:25 |
| R1.htm | 42315 | 2020-06-30 08:01:25 |
| report.css | 2767 | 2020-06-30 08:01:25 |
| Show.js | 1085 | 2020-06-30 08:01:25 |