| Schedule of quarterly financial information |
| | | | | | | | | | | | | | | | | (in millions, except per share data) | First Quarter |
| Second Quarter |
| Third Quarter |
| Fourth Quarter |
| Total Year |
| 2019 | | | | | | Revenue | $ | 26,859 |
| $ | 26,858 |
| $ | 26,827 |
| $ | 28,398 |
| $ | 108,942 |
| Operating income | $ | 5,182 |
| $ | 5,356 |
| $ | 5,340 |
| $ | 5,247 |
| $ | 21,125 |
| Net income attributable to Comcast Corporation | $ | 3,553 |
| $ | 3,125 |
| $ | 3,217 |
| $ | 3,162 |
| $ | 13,057 |
| Basic earnings per common share attributable to Comcast Corporation shareholders | $ | 0.78 |
| $ | 0.69 |
| $ | 0.71 |
| $ | 0.69 |
| $ | 2.87 |
| Diluted earnings per common share attributable to Comcast Corporation shareholders | $ | 0.77 |
| $ | 0.68 |
| $ | 0.70 |
| $ | 0.68 |
| $ | 2.83 |
| Dividends declared per common share | $ | 0.21 |
| $ | 0.21 |
| $ | 0.21 |
| $ | 0.21 |
| $ | 0.84 |
| 2018(a) | | | | | | Revenue | $ | 22,791 |
| $ | 21,735 |
| $ | 22,135 |
| $ | 27,846 |
| $ | 94,507 |
| Operating income | $ | 4,645 |
| $ | 5,014 |
| $ | 4,836 |
| $ | 4,514 |
| $ | 19,009 |
| Net income attributable to Comcast Corporation | $ | 3,118 |
| $ | 3,216 |
| $ | 2,886 |
| $ | 2,511 |
| $ | 11,731 |
| Basic earnings per common share attributable to Comcast Corporation shareholders | $ | 0.67 |
| $ | 0.70 |
| $ | 0.63 |
| $ | 0.55 |
| $ | 2.56 |
| Diluted earnings per common share attributable to Comcast Corporation shareholders | $ | 0.66 |
| $ | 0.69 |
| $ | 0.62 |
| $ | 0.55 |
| $ | 2.53 |
| Dividends declared per common share | $ | 0.19 |
| $ | 0.19 |
| $ | 0.19 |
| $ | 0.19 |
| $ | 0.76 |
|
Minor differences may exist due to rounding. (a) The 2018 amounts include the operations of Sky from October 9, 2018 through December 31, 2018. See Note 8 for additional information.
|