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|---|---|---|
 0000764065-20-000235-index-headers.html | 2020-12-09 08:32:31 | |
| 0000764065-20-000235-index.html | 2020-12-09 08:32:31 | |
| 0000764065-20-000235.txt | 2020-12-09 08:32:31 | |
 0000764065-20-000235-xbrl.zip | 59983 | 2020-12-09 08:32:31 |
| a202012-8xkxex101.htm | 185888 | 2020-12-09 08:32:31 |
| a202012-8xkxex31.htm | 90583 | 2020-12-09 08:32:31 |
| a202012-8xkxex991.htm | 13088 | 2020-12-09 08:32:31 |
 a202012-8xkxex991001.jpg | 201277 | 2020-12-09 08:32:31 |
 a202012-8xkxex991002.jpg | 309671 | 2020-12-09 08:32:31 |
 a202012-8xkxex991003.jpg | 276090 | 2020-12-09 08:32:31 |
 a202012-8xkxex991004.jpg | 43383 | 2020-12-09 08:32:31 |
| clf-20201207.htm | 67885 | 2020-12-09 08:32:31 |
| clf-20201207.xsd | 2485 | 2020-12-09 08:32:31 |
| clf-20201207_cal.xml | 761 | 2020-12-09 08:32:31 |
| clf-20201207_def.xml | 1702 | 2020-12-09 08:32:31 |
| clf-20201207_htm.xml | 12044 | 2020-12-09 08:32:31 |
| clf-20201207_lab.xml | 26305 | 2020-12-09 08:32:31 |
| clf-20201207_pre.xml | 13782 | 2020-12-09 08:32:31 |
| FilingSummary.xml | 1825 | 2020-12-09 08:32:31 |
| Financial_Report.xlsx | 5500 | 2020-12-09 08:32:31 |
| MetaLinks.json | 18903 | 2020-12-09 08:32:31 |
| R1.htm | 41702 | 2020-12-09 08:32:31 |
| report.css | 2767 | 2020-12-09 08:32:31 |
| Show.js | 1085 | 2020-12-09 08:32:31 |