v2.4.0.6
Supplemental Financial Information (Pro Forma Information)(Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Business Acquisition, Pro Forma Information [Abstract]        
Revenue $ 15,211 $ 14,333 $ 30,089 $ 26,461
Net income 1,633 1,367 3,080 2,406
Net income attributable to Comcast Corporation 1,348 1,022 2,572 1,965
Basic earnings per common share attributable to Comcast Corporation shareholders $ 0.50 $ 0.37 $ 0.95 $ 0.71
Diluted earnings per common share attributable to Comcast Corporation shareholders $ 0.50 $ 0.37 $ 0.94 $ 0.70
Revenue [Pro Forma]   14,700   28,280
Net income [Pro Forma]   1,418   2,418
Net income attributable to Comcast Corporation [Pro Forma]   $ 1,038   $ 1,954
Basic earnings per common share attributable to Comcast Corporation shareholders [Pro Forma]   $ 0.38   $ 0.71
Diluted earnings per common share attributable to Comcast Corporation shareholders [Pro Forma]   $ 0.37   $ 0.70