Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) (USD $)
 3 Months Ended 12 Months Ended
Sep. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Operating Loss Carryforwards [Line Items]          
Valuation allowance   $ 51,200,000      
Deferred tax assets related to alternative minimum tax credits that can be carried forward indefinitely   228,500,000 153,400,000    
United States federal net operating loss carry forwards     87,600,000    
State net operating loss carry forwards   147,100,000 338,900,000    
Foreign net operating loss carry forwards   780,500,000 234,400,000    
Deferred Tax Assets, Tax Credit Carryforwards, Foreign   5,800,000 5,800,000    
Foreign tax credit carryforward expiration   2020      
Unrecognized tax benefits that would impact the effective tax rate   102,100,000      
Accrued interest and penalties related to the unrecognized tax benefits   4,100,000 2,100,000    
Deferred tax liabilities on certain foreign investments     78,000,000    
Deferred tax asset on certain foreign investments     9,400,000    
Change in unrecognized tax benefits 39,000,000        
Lapses in statutes of limitations   45,800,000   400,000  
Recognized tax benefits from expiration of statute of limitations   5,700,000      
Valuation allowance on deferred tax assets on certain foreign investments     9,400,000    
Unrecognized tax benefits   102,100,000 79,800,000 75,200,000 53,700,000
Unrecognized tax benefits in income tax expense, accrued interest and penalties   2,500,000 11,600,000    
Decrease in deferred tax asset due to acts signed into law     (16,100,000)    
Foreign [Member]
          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforward expirations   2026      
Foreign [Member] | Operating Income Loss [Member]
          
Operating Loss Carryforwards [Line Items]          
Change in valuation allowance   41,100,000      
Foreign [Member] | Certain Foreign Assets Where Tax Basis Exceeds Book Basis [Member]
          
Operating Loss Carryforwards [Line Items]          
Change in valuation allowance   10,100,000      
State [Member]
          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforward expirations   2022      
Retained Earnings [Member]
          
Operating Loss Carryforwards [Line Items]          
Cumulative undistributed earnings of foreign subsidiaries   1,700,000,000 1,000,000,000    
Consolidated Thompson [Member]
          
Operating Loss Carryforwards [Line Items]          
Foreign net operating loss carry forwards   $ 211,000,000