v2.4.0.8

Share-Based Compensation (Recognized Share-Based Compensation Expense) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 11 Months Ended | 12 Months Ended | 11 Months Ended | 12 Months Ended | 11 Months Ended | 12 Months Ended | 11 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2011 NBCUniversal Media, LLC [Member] | Dec. 31, 2013 NBCUniversal Media, LLC [Member] | Dec. 31, 2012 NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Stock Options [Member] | Dec. 31, 2012 Stock Options [Member] | Dec. 31, 2011 Stock Options [Member] | Dec. 31, 2011 Stock Options [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Stock Options [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Stock Options [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Restricted Share Units [Member] | Dec. 31, 2012 Restricted Share Units [Member] | Dec. 31, 2011 Restricted Share Units [Member] | Dec. 31, 2011 Restricted Share Units [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Restricted Share Units [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Restricted Share Units [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Employee Stock Purchase Plan [Member] | Dec. 31, 2012 Employee Stock Purchase Plan [Member] | Dec. 31, 2011 Employee Stock Purchase Plan [Member] | Dec. 31, 2011 Employee Stock Purchase Plan [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Employee Stock Purchase Plan [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Employee Stock Purchase Plan [Member] NBCUniversal Media, LLC [Member]
Recognized share-based compensation expense | $ 334 | $ 301 | $ 278 | $ 33 | $ 62 | $ 47 | $ 139 | $ 131 | $ 116 | $ 13 | $ 15 | $ 15 | $ 175 | $ 154 | $ 149 | $ 18 | $ 42 | $ 28 | $ 20 | $ 16 | $ 13 | $ 2 | $ 5 | $ 4

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration