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Additional Financial Information Depreciation and Amortization (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		4 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Amortization of intangible assets	Sep. 30, 2013 Amortization of intangible assets	Sep. 30, 2014 Amortization of intangible assets	Sep. 30, 2013 Amortization of intangible assets	Sep. 30, 2014 Amortization of capitalized software	Sep. 30, 2013 Amortization of capitalized software	Sep. 30, 2014 Amortization of capitalized software	Sep. 30, 2013 Amortization of capitalized software	Sep. 30, 2014 Depreciation of fixed assets	Sep. 30, 2013 Depreciation of fixed assets	Sep. 30, 2014 Depreciation of fixed assets	Sep. 30, 2013 Depreciation of fixed assets	Apr. 30, 2013 Super Media, Inc.	Apr. 30, 2013 Super Media, Inc. Amortization of intangible assets
Property, Plant and Equipment [Line Items]
Total depreciation and amortization	$ 161,000,000	$ 242,000,000	$ 483,000,000	$ 524,000,000	$ 147,000,000	$ 226,000,000	$ 440,000,000	$ 477,000,000	$ 9,000,000	$ 11,000,000	$ 29,000,000	$ 33,000,000	$ 5,000,000	$ 5,000,000	$ 14,000,000	$ 14,000,000	$ 0	$ 0