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Growth and Value Plan & Discontinued Operations (Details) (USD $)
 12 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Positions
Dec. 31, 2012
McGraw Hill Education [Member]
Dec. 31, 2012
McGraw Hill Education [Member]
Nov. 26, 2012
McGraw Hill Education [Member]
Dec. 31, 2011
Broadcasting Group [Member]
Oct. 03, 2011
Broadcasting Group [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Divestiture purchase price       $ 2,500,000,000    
Notes receivable related to divestiture       250,000,000    
Notes receivable related to divestiture, interest rate       8.50%    
Growth and value plan, cost incurred to date 297,000,000          
Cash from divestiture of broadcasting group           216,000,000
Pretax Gain Loss Recognized         123,000,000  
Impairment charges, goodwill and intangible assets   497,000,000        
Restructuring costs 39,000,000          
Workforce reduction, positions 530          
Restructuring and Related Cost, Transaction Costs     17,000,000      
Lease commitment charges 3,000,000          
Vacation accrual reversal 17,000,000          
Impairment charges, goodwill   478,000,000        
Impairment charges, excluding goodwill   $ 19,000,000