Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-136271-index-headers.html | 2020-05-07 16:16:25 | |
| 0001193125-20-136271-index.html | 2020-05-07 16:16:25 | |
| 0001193125-20-136271.txt | 2020-05-07 16:16:25 | |
 0001193125-20-136271-xbrl.zip | 15504 | 2020-05-07 16:16:25 |
| ctl-20200507.xsd | 5343 | 2020-05-07 16:16:25 |
| ctl-20200507_def.xml | 14744 | 2020-05-07 16:16:25 |
| ctl-20200507_lab.xml | 24837 | 2020-05-07 16:16:25 |
| ctl-20200507_pre.xml | 15907 | 2020-05-07 16:16:25 |
| d890370d8k.htm | 39709 | 2020-05-07 16:16:25 |
| d890370d8k_htm.xml | 9425 | 2020-05-07 16:16:25 |
| d890370dex991.htm | 96236 | 2020-05-07 16:16:25 |
| FilingSummary.xml | 1833 | 2020-05-07 16:16:25 |
| Financial_Report.xlsx | 6098 | 2020-05-07 16:16:25 |
| MetaLinks.json | 24134 | 2020-05-07 16:16:25 |
| R1.htm | 52164 | 2020-05-07 16:16:25 |
| report.css | 2766 | 2020-05-07 16:16:25 |
| Show.js | 1084 | 2020-05-07 16:16:25 |