Entity Information
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Economic entity name
CLIFFS NATURAL RESOURCES INC.
CIK
0000764065
Accession number
0000764065-17-000021
Generator
Workiva (WebFilings)
SEC filing page
http://www.sec.gov/Archives/edgar/data/764065/000076406517000021/0000764065-17-000021-index.htm
XBRL Instance
http://www.sec.gov/Archives/edgar/data/764065/000076406517000021/clf-20161231.xml
XBRL Cloud Viewer
https://edgardashboard.xbrlcloud.com/flex/viewer/XBRLViewer.html#instance=http://www.sec.gov/Archives/edgar/data/764065/000076406517000021/clf-20161231.xml