v2.4.0.8

Goodwill Rollforward (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  |  |  |  |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2013 NBCUniversal Media, LLC [Member] | Dec. 31, 2012 NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Msnbccom [Member] | Dec. 31, 2012 Msnbccom [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Other Acquisitions [Member] | Dec. 31, 2012 Other Acquisitions [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Cable Communications [Member] | Dec. 31, 2013 Cable Communications [Member] | Dec. 31, 2013 Cable Networks [Member] | Dec. 31, 2012 Cable Networks [Member] | Dec. 31, 2013 Cable Networks [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Cable Networks [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Cable Networks [Member] Msnbccom [Member] | Dec. 31, 2012 Cable Networks [Member] Msnbccom [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Cable Networks [Member] Other Acquisitions [Member] | Dec. 31, 2012 Cable Networks [Member] Other Acquisitions [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Broadcast Television [Member] | Dec. 31, 2012 Broadcast Television [Member] | Dec. 31, 2013 Broadcast Television [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Broadcast Television [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Filmed Entertainment [Member] | Dec. 31, 2012 Filmed Entertainment [Member] | Dec. 31, 2011 Filmed Entertainment [Member] | Dec. 31, 2013 Filmed Entertainment [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Filmed Entertainment [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2011 Filmed Entertainment [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2012 Theme Parks [Member] | Dec. 31, 2013 Theme Parks [Member] | Dec. 31, 2012 Theme Parks [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Theme Parks [Member] NBCUniversal Media, LLC [Member] | Dec. 31, 2013 Corporate and Other [Member] | Dec. 31, 2011 Corporate and Other [Member]
Goodwill beginning balance | $ 26,985 | $ 26,874 | $ 14,770 | $ 14,657 |  |  |  |  | $ 12,208 | $ 12,206 | $ 13,026 | $ 12,744 | $ 13,026 | $ 12,744 |  |  |  |  | $ 761 | $ 772 | $ 761 | $ 772 | $ 1 | $ 1 | $ 1 | $ 1 | $ 1 | $ 1 | $ 1,140 | $ 982 | $ 1,140 | $ 982 | $ 9 | $ 9
Acquisitions | 42 |  | 42 |  | 227 | 227 | 79 | 79 |  |  | 39 |  | 39 |  | 227 | 227 | 79 | 79 | 3 |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |
Dispositions |  | (1) |  |  |  |  |  |  | (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustments | 71 | (194) | 70 | (193) |  |  |  |  | (1) |  | 65 | (24) | 65 | (24) |  |  |  |  | 5 | (11) | 5 | (11) |  |  |  |  |  |  | (158) |  | (158) |  | 1 |
Goodwill ending balance | $ 27,098 | $ 26,985 | $ 14,882 | $ 14,770 |  |  |  |  | $ 12,206 | $ 12,206 | $ 13,130 | $ 13,026 | $ 13,130 | $ 13,026 |  |  |  |  | $ 769 | $ 761 | $ 769 | $ 761 | $ 1 | $ 1 | $ 1 | $ 1 | $ 1 | $ 1 | $ 982 | $ 982 | $ 982 | $ 982 | $ 10 | $ 9

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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X
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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X
- Definition Amount of other (increase) decrease of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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X
- Definition Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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