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Discontinued Operations - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Mar. 31, 2013
Legacy Online
Feb. 28, 2014
Harris Interactive Inc
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]            
Business acquisition price per share of common stock           $ 2.04
Cash consideration from sale of business       $ 950    
Gain on sale, net of tax   303   303    
Income from discontinued operations, net of tax   307   319 3  
Interest expense $ 0 $ 3 $ 0 $ 8