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Annual report pursuant to Section 13 and 15(d)

Acquisitions And Other Investments (Freewest Purchase Price Allocation) (Details)

v2.4.0.6
Acquisitions And Other Investments (Freewest Purchase Price Allocation) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Business Acquisition [Line Items] Ìý Ìý
Total net assets acquired Ìý $ 1.7
Long-term deferred tax liabilities (1,041.8) Ìý
Total net assets acquired Ìý 1.7
Freewest [Member] | Scenario, Previously Reported [Member]
 Ìý Ìý
Business Acquisition [Line Items] Ìý Ìý
Equity instruments (4.2 million Cliffs common shares) Ìý 173.1
Cash Ìý 12.8
Fair value of total consideration transferred Ìý 185.9
Fair value of Cliffs' ownership interest in subsidiary held prior to acquisition of remaining interest Ìý 27.4
Total net assets acquired Ìý 213.3
Cash Ìý 7.7
Other current assets Ìý 1.4
Mineral rights Ìý 252.8
Marketable securities Ìý 12.1
Total identifiable assets acquired Ìý 274.0
Accounts payable Ìý (3.3)
Long-term deferred tax liabilities Ìý (57.4)
Total identifiable liabilities assumed Ìý (60.7)
Total identifiable net assets acquired Ìý 213.3
Total net assets acquired Ìý 213.3
Freewest [Member] | Scenario, Adjustment [Member]
 Ìý Ìý
Business Acquisition [Line Items] Ìý Ìý
Equity instruments (4.2 million Cliffs common shares) Ìý 173.1
Cash Ìý 12.8
Fair value of total consideration transferred Ìý 185.9
Fair value of Cliffs' ownership interest in subsidiary held prior to acquisition of remaining interest Ìý 27.4
Total net assets acquired Ìý 213.3
Cash Ìý 7.7
Other current assets Ìý 1.4
Mineral rights Ìý 244.0
Marketable securities Ìý 12.1
Total identifiable assets acquired Ìý 265.2
Accounts payable Ìý (3.3)
Long-term deferred tax liabilities Ìý (54.3)
Total identifiable liabilities assumed Ìý (57.6)
Total identifiable net assets acquired Ìý 207.6
Goodwill Ìý 5.7
Total net assets acquired Ìý 213.3
Freewest [Member] | Scenario, Change [Member]
 Ìý Ìý
Business Acquisition [Line Items] Ìý Ìý
Mineral rights Ìý (8.8)
Total identifiable assets acquired Ìý (8.8)
Long-term deferred tax liabilities Ìý 3.1
Total identifiable liabilities assumed Ìý 3.1
Total identifiable net assets acquired Ìý (5.7)
Goodwill Ìý $ 5.7