Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000764065-18-000088-index-headers.html | 2018-04-24 09:46:32 | |
| 0000764065-18-000088-index.html | 2018-04-24 09:46:32 | |
| 0000764065-18-000088.txt | 2018-04-24 09:46:32 | |
 0000764065-18-000088-xbrl.zip | 380565 | 2018-04-24 09:46:32 |
| clf-20180331.xml | 4993567 | 2018-04-24 09:46:32 |
| clf-20180331.xsd | 78143 | 2018-04-24 09:46:32 |
| clf-20180331_cal.xml | 112100 | 2018-04-24 09:46:32 |
| clf-20180331_def.xml | 555935 | 2018-04-24 09:46:32 |
| clf-20180331_lab.xml | 901775 | 2018-04-24 09:46:32 |
| clf-20180331_pre.xml | 739662 | 2018-04-24 09:46:32 |
| clf-201833110xq.htm | 2538484 | 2018-04-24 09:46:32 |
| clf-201833110xqex101.htm | 2773204 | 2018-04-24 09:46:32 |
| clf-201833110xqex102.htm | 76973 | 2018-04-24 09:46:32 |
| clf-201833110xqex104.htm | 100311 | 2018-04-24 09:46:32 |
| clf-201833110xqex311.htm | 14651 | 2018-04-24 09:46:32 |
| clf-201833110xqex312.htm | 14425 | 2018-04-24 09:46:32 |
| clf-201833110xqex321.htm | 9154 | 2018-04-24 09:46:32 |
| clf-201833110xqex322.htm | 8654 | 2018-04-24 09:46:32 |
| clf-201833110xqex95.htm | 62841 | 2018-04-24 09:46:32 |
| clf-20183311oxqex103.htm | 105802 | 2018-04-24 09:46:32 |
 clf-logoa01a01a06.jpg | 19593 | 2018-04-24 09:46:32 |
| FilingSummary.xml | 66921 | 2018-04-24 09:46:32 |
| Financial_Report.xlsx | 130838 | 2018-04-24 09:46:32 |
| R1.htm | 27319 | 2018-04-24 09:46:32 |
| R10.htm | 24917 | 2018-04-24 09:46:32 |
| R11.htm | 33570 | 2018-04-24 09:46:32 |
| R12.htm | 30225 | 2018-04-24 09:46:32 |
| R13.htm | 125700 | 2018-04-24 09:46:32 |
| R14.htm | 217605 | 2018-04-24 09:46:32 |
| R15.htm | 38692 | 2018-04-24 09:46:32 |
| R16.htm | 20318 | 2018-04-24 09:46:32 |
| R17.htm | 7771 | 2018-04-24 09:46:32 |
| R18.htm | 25210 | 2018-04-24 09:46:32 |
| R19.htm | 39176 | 2018-04-24 09:46:32 |
| R2.htm | 94334 | 2018-04-24 09:46:32 |
| R20.htm | 25926 | 2018-04-24 09:46:32 |
| R21.htm | 89508 | 2018-04-24 09:46:32 |
| R22.htm | 117159 | 2018-04-24 09:46:32 |
| R23.htm | 42459 | 2018-04-24 09:46:32 |
| R24.htm | 38088 | 2018-04-24 09:46:32 |
| R25.htm | 19011 | 2018-04-24 09:46:32 |
| R26.htm | 5024 | 2018-04-24 09:46:32 |
| R27.htm | 654887 | 2018-04-24 09:46:32 |
| R28.htm | 41942 | 2018-04-24 09:46:32 |
| R29.htm | 31322 | 2018-04-24 09:46:32 |
| R3.htm | 20991 | 2018-04-24 09:46:32 |
| R30.htm | 313635 | 2018-04-24 09:46:32 |
| R31.htm | 126071 | 2018-04-24 09:46:32 |
| R32.htm | 14294 | 2018-04-24 09:46:32 |
| R33.htm | 31294 | 2018-04-24 09:46:32 |
| R34.htm | 28054 | 2018-04-24 09:46:32 |
| R35.htm | 117828 | 2018-04-24 09:46:32 |
| R36.htm | 220224 | 2018-04-24 09:46:32 |
| R37.htm | 34571 | 2018-04-24 09:46:32 |
| R38.htm | 16036 | 2018-04-24 09:46:32 |
| R39.htm | 23663 | 2018-04-24 09:46:32 |
| R4.htm | 78642 | 2018-04-24 09:46:32 |
| R40.htm | 38457 | 2018-04-24 09:46:32 |
| R41.htm | 21059 | 2018-04-24 09:46:32 |
| R42.htm | 76677 | 2018-04-24 09:46:32 |
| R43.htm | 120891 | 2018-04-24 09:46:32 |
| R44.htm | 42997 | 2018-04-24 09:46:32 |
| R45.htm | 37259 | 2018-04-24 09:46:32 |
| R46.htm | 651815 | 2018-04-24 09:46:32 |
| R47.htm | 12805 | 2018-04-24 09:46:32 |
| R48.htm | 9066 | 2018-04-24 09:46:32 |
| R49.htm | 11412 | 2018-04-24 09:46:32 |
| R5.htm | 22930 | 2018-04-24 09:46:32 |
| R50.htm | 214841 | 2018-04-24 09:46:32 |
| R51.htm | 6372 | 2018-04-24 09:46:32 |
| R52.htm | 62968 | 2018-04-24 09:46:32 |
| R53.htm | 13642 | 2018-04-24 09:46:32 |
| R54.htm | 17128 | 2018-04-24 09:46:32 |
| R55.htm | 29662 | 2018-04-24 09:46:32 |
| R56.htm | 15611 | 2018-04-24 09:46:32 |
| R57.htm | 10408 | 2018-04-24 09:46:32 |
| R58.htm | 32973 | 2018-04-24 09:46:32 |
| R59.htm | 5772 | 2018-04-24 09:46:32 |
| R6.htm | 62276 | 2018-04-24 09:46:32 |
| R60.htm | 49913 | 2018-04-24 09:46:32 |
| R61.htm | 21088 | 2018-04-24 09:46:32 |
| R62.htm | 34005 | 2018-04-24 09:46:32 |
| R63.htm | 26122 | 2018-04-24 09:46:32 |
| R64.htm | 43110 | 2018-04-24 09:46:32 |
| R65.htm | 27418 | 2018-04-24 09:46:32 |
| R66.htm | 44578 | 2018-04-24 09:46:32 |
| R67.htm | 19752 | 2018-04-24 09:46:32 |
| R68.htm | 32509 | 2018-04-24 09:46:32 |
| R69.htm | 20638 | 2018-04-24 09:46:32 |
| R7.htm | 36956 | 2018-04-24 09:46:32 |
| R70.htm | 10717 | 2018-04-24 09:46:32 |
| R71.htm | 17978 | 2018-04-24 09:46:32 |
| R72.htm | 16075 | 2018-04-24 09:46:32 |
| R73.htm | 14323 | 2018-04-24 09:46:32 |
| R74.htm | 42022 | 2018-04-24 09:46:32 |
| R75.htm | 4170 | 2018-04-24 09:46:32 |
| R76.htm | 19341 | 2018-04-24 09:46:32 |
| R77.htm | 14220 | 2018-04-24 09:46:32 |
| R78.htm | 10332 | 2018-04-24 09:46:32 |
| R79.htm | 10857 | 2018-04-24 09:46:32 |
| R8.htm | 319936 | 2018-04-24 09:46:32 |
| R80.htm | 11345 | 2018-04-24 09:46:32 |
| R81.htm | 28480 | 2018-04-24 09:46:32 |
| R82.htm | 16277 | 2018-04-24 09:46:32 |
| R83.htm | 30750 | 2018-04-24 09:46:32 |
| R84.htm | 57438 | 2018-04-24 09:46:32 |
| R85.htm | 23718 | 2018-04-24 09:46:32 |
| R86.htm | 24986 | 2018-04-24 09:46:32 |
| R87.htm | 5889 | 2018-04-24 09:46:32 |
| R88.htm | 11302 | 2018-04-24 09:46:32 |
| R89.htm | 8752 | 2018-04-24 09:46:32 |
| R9.htm | 124759 | 2018-04-24 09:46:32 |
| R90.htm | 21820 | 2018-04-24 09:46:32 |
| R91.htm | 22680 | 2018-04-24 09:46:32 |
| R92.htm | 47498 | 2018-04-24 09:46:32 |
| R93.htm | 5335 | 2018-04-24 09:46:32 |
| R94.htm | 10256 | 2018-04-24 09:46:32 |
| R95.htm | 147914 | 2018-04-24 09:46:32 |
| R96.htm | 91152 | 2018-04-24 09:46:32 |
| R97.htm | 74363 | 2018-04-24 09:46:32 |
| R98.htm | 7580 | 2018-04-24 09:46:32 |
| report.css | 2768 | 2018-04-24 09:46:32 |
 schedulee1.jpg | 75930 | 2018-04-24 09:46:32 |
| Show.js | 1411 | 2018-04-24 09:46:32 |