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| 0000764065-22-000031-index.html | 2022-02-11 07:12:21 | |
| 0000764065-22-000031.txt | 2022-02-11 07:12:21 | |
 0000764065-22-000031-xbrl.zip | 29061 | 2022-02-11 07:12:21 |
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| clf-20220211.htm | 37953 | 2022-02-11 07:12:21 |
| clf-20220211.xsd | 2019 | 2022-02-11 07:12:21 |
| clf-20220211_htm.xml | 11054 | 2022-02-11 07:12:21 |
| clf-20220211_lab.xml | 24229 | 2022-02-11 07:12:21 |
| clf-20220211_pre.xml | 12696 | 2022-02-11 07:12:21 |
| ex991q420218-k.htm | 290945 | 2022-02-11 07:12:21 |
| FilingSummary.xml | 1729 | 2022-02-11 07:12:21 |
| Financial_Report.xlsx | 5682 | 2022-02-11 07:12:21 |
| MetaLinks.json | 17474 | 2022-02-11 07:12:21 |
| R1.htm | 38587 | 2022-02-11 07:12:21 |
| report.css | 2767 | 2022-02-11 07:12:21 |
| Show.js | 1085 | 2022-02-11 07:12:21 |