v3.3.1.900
Discontinued Operations (Narrative) (Details)
AUD / shares in Units, $ / shares in Units, € in Millions, AUD in Millions, $ in Millions
 1 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2014
Oct. 28, 2013
EUR (€)
Oct. 28, 2013
USD ($)
May. 23, 2012
AUD
May. 23, 2012
USD ($)
$ / shares
Apr. 30, 2014
Sep. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
May. 23, 2012
AUD / shares
Jul. 11, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Deferred income tax expense (benefit)               $ (350.6) $ 18.6 $ 36.0    
Gain on disposal of discontinued operations, net of taxes               332.7 0.0 924.1    
Foreign currency transaction gains (losses)               (836.5) 349.3 438.4    
Net earnings (loss)               $ (647.4) $ (905.7) $ 387.3    
Foreign Tax Authority [Member]                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Statutory income tax rate               35.00%        
Domestic Tax Authority [Member]                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Statutory income tax rate 23.00%         21.00%            
Chellomedia [Member]                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Proceeds from divestiture of business   € 750.0 $ 1,013.1                  
Pre-tax gain on sale             $ 342.2          
Deferred income tax expense (benefit)             9.5          
Gain on disposal of discontinued operations, net of taxes             332.7          
Chellomedia [Member] | Accumulated Translation Adjustment [Member]                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Pre-tax gain on sale             $ 64.0          
Chellomedia [Member] | Domestic Tax Authority [Member]                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Statutory income tax rate             21.50%          
Austar [Member]                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Proceeds from divestiture of business         $ 1,056.1              
Deferred income tax expense (benefit)               $ 4.1        
Business disposition, percent of ownership interest sold                       100.00%
Business acquisition percentage of voting interests acquired                       45.85%
Percentage of shares owned after stock transaction       54.15% 54.15%              
Equity interest in acquiree before increase in ownership | AUD       AUD 1,046.5                
Gain (loss) on disposal               928.2        
Foreign currency transaction gains (losses)               22.6        
Net earnings (loss)               $ (15.1)        
Austar [Member] | FOXTEL [Member]                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Percentage of shares owned after stock transaction       100.00% 100.00%              
Business acquisition, purchase price (in AUD/USD per share) | (per share)         $ 1.50           AUD 1.52  
Cost of acquired entity       AUD 1,932.7 $ 1,906.6