Rendering

Component: (Network and Table)
Network
2403403 - Disclosure - INVENTORIES (Schedule Of Inventories) (Details)
(http://www.cliffsnaturalresources.com/role/InventoriesScheduleOfInventoriesDetails)
TableInventory, Current [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000764065 (http://www.sec.gov/CIK)
Inventory [Line Items]Period [Axis]
2016-12-31
2015-12-31
Segments [Axis]Segments [Axis]
U.S. Iron Ore [Member]Asia Pacific Iron Ore [Member]Segments [Domain]U.S. Iron Ore [Member]Asia Pacific Iron Ore [Member]Segments [Domain]
Inventory, Net [Abstract]
 
 
 
 
 
 
Finished Goods
124,400,000  
23,600,000  
148,000,000  
252,300,000  
20,800,000  
273,100,000  
Work-in Process
12,600,000  
17,800,000  
30,400,000  
11,700,000  
44,800,000  
56,500,000  
Total Inventory
137,000,000  
 
41,400,000  
 
178,400,000  
 
264,000,000  
 
65,600,000  
 
329,600,000