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Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Earnings Per Share Computation) (Details)

v2.4.0.6
Earnings Per Share (Earnings Per Share Computation) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Earnings Per Share [Abstract] Ìý Ìý
Net income from continuing operations attributable to Cliffs shareholders $ 375.9 $ 423.8
Loss from discontinued operations (0.1) (0.4)
Net Income Attributable to Cliffs Shareholders $ 375.8 $ 423.4
Number of Shares: Ìý Ìý
Basic 142,226,000 135,486,000
Employee stock plans 500,000 700,000
Diluted 142,709,000 136,191,000
Income (Loss) from Continuing Operations, Per Basic Share $ 2.64 $ 3.12
Earnings per common share attributable to Cliffs shareholders - Basic $ 2.64 $ 3.12
Income (Loss) from Continuing Operations, Per Diluted Share $ 2.63 $ 3.11
Earnings per common share attributable to Cliffs shareholders - Diluted $ 2.63 $ 3.11