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Acquisition Accounting Components of Intangible Assets (Details) (USD $) In Millions, unless otherwise specified | 0 Months Ended
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Apr. 30, 2013
Directory services agreements |
Acquired Finite-Lived Intangible Assets [Line Items] |
Estimated Remaining Useful Lives | 5 years
Client relationships |
Acquired Finite-Lived Intangible Assets [Line Items] |
Estimated Remaining Useful Lives | 4 years
Trademarks and domain names |
Acquired Finite-Lived Intangible Assets [Line Items] |
Estimated Remaining Useful Lives | 6 years
Patented technologies |
Acquired Finite-Lived Intangible Assets [Line Items] |
Estimated Remaining Useful Lives | 5 years
Super Media, Inc. |
Acquired Finite-Lived Intangible Assets [Line Items] |
Fair value of intangible assets | $ 635
Super Media, Inc. | Directory services agreements |
Acquired Finite-Lived Intangible Assets [Line Items] |
Fair value of intangible assets | 145
Super Media, Inc. | Client relationships |
Acquired Finite-Lived Intangible Assets [Line Items] |
Fair value of intangible assets | 420
Super Media, Inc. | Trademarks and domain names |
Acquired Finite-Lived Intangible Assets [Line Items] |
Fair value of intangible assets | 60
Super Media, Inc. | Patented technologies |
Acquired Finite-Lived Intangible Assets [Line Items] |
Fair value of intangible assets | $ 10

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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