Quarterly report pursuant to Section 13 or 15(d)

Acquisitions and Other Investments (Consolidated Thompson Purchase Price Allocation) (Details)

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Acquisitions and Other Investments (Consolidated Thompson Purchase Price Allocation) (Details) (USD $)
In Millions
Dec. 31, 2010
Jun. 30, 2011
Consolidated Thompson [Member]
Cash   $ 4,554.0
Fair value of total consideration transferred   4,554.0
Cash   130.6
Accounts receivable   102.8
Product inventories   134.2
Other current assets   35.1
Mineral rights   4,450.0
Plant and equipment   1,193.4
Intangible assets   2.1
Total identifiable assets acquired   6,048.2
Accounts payable   (13.6)
Accrued liabilities   (130.0)
Convertible debentures   (335.7)
Other current liabilities   (41.8)
Deferred taxes   (831.5)
Wabush Easement   (11.1)
Senior secured notes   (125.0)
Capital lease obligations   (70.7)
Other liabilities   (14.0)
Total identifiable liabilities assumed   (1,573.4)
Total identifiable net assets acquired   4,474.8
Noncontrolling interest in Consolidated Thompson   (947.6)
Preliminary goodwill   1,026.8
Total net assets acquired $ 1.7 $ 4,554.0