Annual report pursuant to Section 13 and 15(d)

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

v2.4.0.6
Acquisitions And Other Investments (Consolidated Thompson Purchase Price Allocation) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Business Acquisition [Line Items]    
Long-term deferred tax liabilities $ (1,041.8)  
Noncontrolling interest in subsidiary (1,075.4)  
Total net assets acquired   1.7
Consolidated Thompson [Member]
    
Business Acquisition [Line Items]    
Fair value of total consideration transferred 4,600.0  
Preliminary goodwill 983.5  
Consolidated Thompson [Member] | Scenario, Previously Reported [Member]
    
Business Acquisition [Line Items]    
Cash portion of acquisition consideration 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)  
Long-term deferred tax liabilities (831.5)  
Senior secured notes (125.0)  
Capital lease obligations (70.7)  
Other liabilities (25.1)  
Total identifiable liabilities assumed (1,573.4)  
Total identifiable net assets acquired 4,474.8  
Noncontrolling interest in subsidiary (947.6)  
Preliminary goodwill 1,026.8  
Total net assets acquired 4,554.0  
Consolidated Thompson [Member] | Scenario, Adjustment [Member]
    
Business Acquisition [Line Items]    
Cash portion of acquisition consideration 4,554.0  
Fair value of total consideration transferred 4,554.0  
Cash 130.6  
Accounts receivable 102.4  
Product inventories 134.2  
Other current assets 35.1  
Mineral rights 4,825.6  
Plant and equipment 1,193.4  
Intangible assets 2.1  
Total identifiable assets acquired 6,423.4  
Accounts payable (13.6)  
Accrued liabilities (123.8)  
Convertible debentures (335.7)  
Other current liabilities (41.8)  
Long-term deferred tax liabilities (1,041.8)  
Senior secured notes (125.0)  
Capital lease obligations (70.7)  
Other liabilities (25.1)  
Total identifiable liabilities assumed (1,777.5)  
Total identifiable net assets acquired 4,645.9  
Noncontrolling interest in subsidiary (1,075.4)  
Preliminary goodwill 983.5  
Total net assets acquired 4,554.0  
Consolidated Thompson [Member] | Scenario, Change [Member]
    
Business Acquisition [Line Items]    
Accounts receivable (0.4)  
Mineral rights 375.6  
Total identifiable assets acquired 375.2  
Accrued liabilities 6.2  
Long-term deferred tax liabilities (210.3)  
Total identifiable liabilities assumed (204.1)  
Total identifiable net assets acquired 171.1  
Noncontrolling interest in subsidiary (127.8)  
Preliminary goodwill $ (43.3)