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| 0000764065-20-000215.txt | 2020-09-28 06:28:36 | |
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| clf-20200924.htm | 85298 | 2020-09-28 06:28:36 |
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| FilingSummary.xml | 2026 | 2020-09-28 06:28:36 |
| Financial_Report.xlsx | 5499 | 2020-09-28 06:28:36 |
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| R1.htm | 41209 | 2020-09-28 06:28:36 |
| report.css | 2766 | 2020-09-28 06:28:36 |
| Show.js | 1085 | 2020-09-28 06:28:36 |