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Intangible Assets (Details) (USD $)
 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 4 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Jun. 30, 2014
Directory services agreements
Dec. 31, 2013
Directory services agreements
Jun. 30, 2014
Client relationships
Dec. 31, 2013
Client relationships
Jun. 30, 2014
Trademarks and domain names
Dec. 31, 2013
Trademarks and domain names
Jun. 30, 2014
Patented technologies
Dec. 31, 2013
Patented technologies
Jun. 30, 2014
Advertising commitment
Dec. 31, 2013
Advertising commitment
Jun. 30, 2014
Amortization of intangible assets
Jun. 30, 2013
Amortization of intangible assets
Jun. 30, 2014
Amortization of intangible assets
Jun. 30, 2013
Amortization of intangible assets
Apr. 30, 2013
Super Media, Inc.
Apr. 30, 2013
Super Media, Inc.
Amortization of intangible assets
Finite-Lived Intangible Assets [Line Items]                                          
Depreciation and amortization $ 161,000,000 $ 193,000,000 $ 322,000,000 $ 282,000,000                       $ 146,000,000 $ 176,000,000 $ 293,000,000 $ 251,000,000 $ 0 $ 0
Finite-lived intangible assets, gross 1,865,000,000   1,865,000,000   1,865,000,000 666,000,000 666,000,000 924,000,000 924,000,000 222,000,000 222,000,000 42,000,000 42,000,000 11,000,000 11,000,000            
Finite-Lived intangible assets, accumulated amortization 777,000,000   777,000,000   484,000,000 202,000,000 97,000,000 498,000,000 348,000,000 60,000,000 29,000,000 10,000,000 4,000,000 7,000,000 6,000,000            
Finite-lived intangible assets, net 1,088,000,000   1,088,000,000   1,381,000,000 464,000,000 569,000,000 426,000,000 576,000,000 162,000,000 193,000,000 32,000,000 38,000,000 4,000,000 5,000,000            
Estimated amortization expense                                          
2014 estimated amortization expense 587,000,000   587,000,000                                    
2015 estimated amortization expense 373,000,000   373,000,000                                    
2016 estimated amortization expense 237,000,000   237,000,000                                    
2017 estimated amortization expense 103,000,000   103,000,000                                    
2018 estimated amortization expense $ 81,000,000   $ 81,000,000