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Quarterly report pursuant to Section 13 or 15(d)

SHAREHOLDERS' EQUITY Schedule of Shareholders' Equity (Details)

v2.4.0.8
SHAREHOLDERS' EQUITY Schedule of Shareholders' Equity (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Stockholders' Equity Attributable to Parent $ 6,027.6 Ìý $ 6,027.6 Ìý $ 6,069.5 Ìý
Stockholders' Equity Attributable to Noncontrolling Interest 802.0 Ìý 802.0 Ìý 814.8 Ìý
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 6,829.6 6,783.8 6,829.6 6,783.8 6,884.3 5,760.9
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS 10.9 146.0 (59.4) 253.0 Ìý Ìý
INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTEREST 3.6 (4.7) 3.2 9.1 Ìý Ìý
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest 14.5 141.3 (56.2) 262.1 Ìý Ìý
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent 45.8 (42.2) 33.3 69.0 Ìý Ìý
Other Comprehensive Income (Loss), Net of Tax 35.5 (187.1) 93.8 (181.7) Ìý Ìý
OTHER COMPREHENSIVE INCOME ATTRIBUTABLE TO THE NONCONTROLLING INTEREST (0.6) (1.1) (1.1) (2.3) Ìý Ìý
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Ìý Ìý 37.6 80.4 Ìý Ìý
Stock and Other Incentive Plans Ìý Ìý (3.1) 3.7 Ìý Ìý
Common and preferred share dividends Ìý Ìý (72.1) (68.9) Ìý Ìý
Undistributed Gains To Noncontrolling Interest Ìý Ìý (17.1) Ìý Ìý Ìý
Capital Contribution By Noncontrolling Interest Ìý Ìý Ìý 13.0 Ìý Ìý
Cliffs Shareholders Equity [Member]
Ìý Ìý Ìý Ìý Ìý Ìý
Stockholders' Equity Attributable to Parent 6,027.6 5,631.2 6,027.6 5,631.2 6,069.5 4,632.7
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS Ìý Ìý (59.4) 253.0 Ìý Ìý
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Ìý Ìý 92.7 (184.0) Ìý Ìý
Comprehensive Income (Loss), Net of Tax, Attributable to Parent Ìý Ìý 33.3 69.0 Ìý Ìý
Stock and Other Incentive Plans Ìý Ìý (3.1) 3.7 Ìý Ìý
Common and preferred share dividends Ìý Ìý (72.1) (68.9) Ìý Ìý
Undistributed Gains To Noncontrolling Interest Ìý Ìý 0 Ìý Ìý Ìý
Capital Contribution By Noncontrolling Interest Ìý Ìý Ìý 0 Ìý Ìý
Noncontrolling Interest [Member]
Ìý Ìý Ìý Ìý Ìý Ìý
Stockholders' Equity Attributable to Noncontrolling Interest 802.0 1,152.6 802.0 1,152.6 814.8 1,128.2
INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTEREST Ìý Ìý 3.2 9.1 Ìý Ìý
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Ìý Ìý 1.1 2.3 Ìý Ìý
OTHER COMPREHENSIVE INCOME ATTRIBUTABLE TO THE NONCONTROLLING INTEREST Ìý Ìý 4.3 11.4 Ìý Ìý
Stock and Other Incentive Plans Ìý Ìý 0 0 Ìý Ìý
Common and preferred share dividends Ìý Ìý 0 0 Ìý Ìý
Undistributed Gains To Noncontrolling Interest Ìý Ìý (17.1) Ìý Ìý Ìý
Capital Contribution By Noncontrolling Interest Ìý Ìý Ìý 13.0 Ìý Ìý
Common Stock [Member]
Ìý Ìý Ìý Ìý Ìý Ìý
Stock Issued During Period, Value, New Issues Ìý Ìý Ìý 263.4 Ìý Ìý
Common Stock [Member] | Cliffs Shareholders Equity [Member]
Ìý Ìý Ìý Ìý Ìý Ìý
Stock Issued During Period, Value, New Issues Ìý Ìý Ìý 263.4 Ìý Ìý
Common Stock [Member] | Noncontrolling Interest [Member]
Ìý Ìý Ìý Ìý Ìý Ìý
Stock Issued During Period, Value, New Issues Ìý Ìý Ìý 0 Ìý Ìý
Preferred Class A [Member]
Ìý Ìý Ìý Ìý Ìý Ìý
Stock Issued During Period, Value, New Issues Ìý Ìý Ìý 731.3 Ìý Ìý
Preferred Class A [Member] | Cliffs Shareholders Equity [Member]
Ìý Ìý Ìý Ìý Ìý Ìý
Stock Issued During Period, Value, New Issues Ìý Ìý Ìý 731.3 Ìý Ìý
Preferred Class A [Member] | Noncontrolling Interest [Member]
Ìý Ìý Ìý Ìý Ìý Ìý
Stock Issued During Period, Value, New Issues Ìý Ìý Ìý $ 0 Ìý Ìý