Quarterly report pursuant to Section 13 or 15(d)

Disposals (Details)

v3.7.0.1
Disposals (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
CommerceHub | Disposal Group, Not Discontinued Operations [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Revenue   $ 22.0
Disposal Group Net Earnings (Loss)   (2.0)
CommerceHub | Spinoff    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Revenue $ 22.0  
Expedia | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Earnings (loss) before income taxes   (28.0)
Income tax (expense) benefit   12.0
Bodybuilding | Disposal Group, Not Discontinued Operations [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Revenue   116.0
Disposal Group Net Earnings (Loss)   $ 1.0
Liberty Ventures common stock    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share   $ (0.11)
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share   $ (0.11)