ÐÇ¿Õ´«Ã½

Annual report pursuant to Section 13 and 15(d)

Stock Compensation Plans (Share-based Compensation Expense Recorded For Continuing Operations) (Details)

v2.4.0.6
Stock Compensation Plans (Share-based Compensation Expense Recorded For Continuing Operations) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Mar. 31, 2010
Sep. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Selling, general and administrative expenses Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý $ 274.4 $ 202.1 $ 117.6
Reduction of operating income from continuing operations before income taxes and equity income (loss) from ventures Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý (16.1) (2,241.5) (1,303.0) (296.5)
Income tax benefit Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý 420.1 293.5 22.5
NET INCOME ATTRIBUTABLE TO CLIFFS SHAREHOLDERS 185.4 601.2 409.1 423.4 384.1 297.6 260.8 77.4 Ìý 1,619.1 1,019.9 205.1
Reduction of earnings per share attributable to Cliffs shareholders: Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Basic $ 1.30 $ 4.17 $ 2.94 $ 3.12 $ 2.84 $ 2.19 $ 1.93 $ 0.58 Ìý $ 11.55 $ 7.54 $ 1.64
Diluted $ 1.30 $ 4.15 $ 2.92 $ 3.11 $ 2.82 $ 2.18 $ 1.92 $ 0.57 Ìý $ 11.48 $ 7.49 $ 1.63
Stock Based Compensation Expense [Member]
 Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Cost of goods sold and operating expenses Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý 2.7 2.8 1.2
Selling, general and administrative expenses Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý 13.2 12.7 11.0
Reduction of operating income from continuing operations before income taxes and equity income (loss) from ventures Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý 15.9 15.5 12.2
Income tax benefit Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý (5.6) (5.4) (4.3)
NET INCOME ATTRIBUTABLE TO CLIFFS SHAREHOLDERS Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý $ (10.3) $ (10.1) $ (7.9)
Reduction of earnings per share attributable to Cliffs shareholders: Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Basic Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý $ 0.07 $ 0.07 $ 0.06
Diluted Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý $ 0.07 $ 0.07 $ 0.06