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Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Oct. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 15, 2009
Income Tax Contingency [Line Items]          
Deferred tax assets, valuation allowance   $ 139.5 $ 118.5    
Deferred tax assets, tax loss carryforwards   135.0 94.0    
Operating loss carryforwards   148.5      
Deferred tax liabilities   124.7 144.7    
Income tax expense (benefit)   (14.7) 6.6 $ 30.5  
Unrecognized tax benefits that would impact effective tax rate   20.1 25.0 55.0  
Unrecognized tax benefits, income tax penalties expense   (1.4) (1.2) 0.7  
Unrecognized tax benefits, interest on income taxes expense   (3.1) (0.3) 3.7  
Recognized liabilities for penalties   1.7 3.5 7.4  
Recognized liabilities for expense   2.8 6.8 $ 14.8  
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit   3.0      
Proposed cumulative taxable income adjustment $ 33.6        
Africa/Asia Pacific [Member]          
Income Tax Contingency [Line Items]          
Deferred tax liabilities   0.6      
Income tax expense (benefit)   25.0      
Brazil and South Africa [Member]          
Income Tax Contingency [Line Items]          
Deferred tax assets, valuation allowance   1.4      
GERMANY [Member]          
Income Tax Contingency [Line Items]          
Income tax expense (benefit)   (4.3)      
Outside of the Asia Pacific and African regions [Member]          
Income Tax Contingency [Line Items]          
Income tax expense (benefit)   325.0      
FIJI [Member] | Africa/Asia Pacific [Member]          
Income Tax Contingency [Line Items]          
Income tax expense (benefit)   1.8      
Taxing Jurisdictions [Member]          
Income Tax Contingency [Line Items]          
Deferred tax assets, tax loss carryforwards   50.1      
Subsidiaries [Member] | Africa/Asia Pacific [Member]          
Income Tax Contingency [Line Items]          
Income tax expense (benefit)   0.5      
Spanish Parent [Member] | EGYPT [Member]          
Income Tax Contingency [Line Items]          
Income tax expense (benefit)   0.2      
Foreign Country [Member]          
Income Tax Contingency [Line Items]          
Operating loss carryforwards   319.0      
Subordinated Convertible Notes Due 2029 [Member] | North America [Member]          
Income Tax Contingency [Line Items]          
Liability component of convertible notes   $ 429.5 $ 429.5   $ 162.9