v2.4.0.8

Noncontrolling Interests (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 19, 2013
Net income attributable to Parent | $ 1,913 | $ 1,732 | $ 1,734 | $ 1,437 | $ 1,518 | $ 2,113 | $ 1,348 | $ 1,224 | $ 6,816 | $ 6,203 | $ 4,160 |
Changes in equity resulting from net income attributable to Comcast Corporation and transfers from (to) noncontrolling interests |  |  |  |  |  |  |  |  | 5,139 |  |  |
Remaining equity interest acquired |  |  |  |  |  |  |  |  |  |  |  | 49.00%
Redemption Transaction [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in Comcast Corporation additional paid-in capital resulting from the purchase of noncontrolling interest |  |  |  |  |  |  |  |  | (1,651) |  |  |
Other Purchase [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in Comcast Corporation additional paid-in capital resulting from the purchase of noncontrolling interest |  |  |  |  |  |  |  |  | $ (26) |  |  |

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