Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations (Details)

Discontinued Operations (Details) (Disc Publishing, USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2014
Disc Publishing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Costs to sell a business $ 2.9 $ 3.0