| Fiscal period | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 |
|---|
| Period End Date | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 | 12/31/2014 | 12/31/2013 | 12/31/2012 | 12/31/2011 | 12/31/2010 | 12/31/2009 |
|---|
| Service revenues | 94,507.00 | 85,029.00 | 80,736.00 | 74,510.00 | 68,775.00 | 64,657.00 | 62,570.00 | 55,842.00 | 37,937.00 | 35,756.00 |
| Net sales from electronic retailing | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total Revenues | 94,507.00 | 85,029.00 | 80,736.00 | 74,510.00 | 68,775.00 | 64,657.00 | 62,570.00 | 55,842.00 | 37,937.00 | 35,756.00 |
| Operating (excluding depreciation) | -- | -- | -- | -- | -- | -- | -- | -- | -- | 22,042.00 |
| Cost of goods sold from electronic retailing | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Costs and Expenses: Programming and production | 29,692.00 | 25,355.00 | 24,348.00 | 22,550.00 | 20,912.00 | 19,670.00 | 19,929.00 | 16,596.00 | 8,537.00 | -- |
| Costs and Expenses: Other operating and administrative | 28,094.00 | 25,449.00 | 23,840.00 | 21,325.00 | 19,839.00 | 18,575.00 | 17,833.00 | 16,646.00 | 12,395.00 | -- |
| Depreciation | 8,281.00 | 7,914.00 | 7,464.00 | 6,781.00 | 6,337.00 | 6,254.00 | 6,150.00 | 6,040.00 | 5,539.00 | 5,483.00 |
| Amortization | 2,736.00 | 2,216.00 | 1,962.00 | 1,899.00 | 1,682.00 | 1,617.00 | 1,648.00 | 1,596.00 | 1,077.00 | 1,017.00 |
| Selling, general and administrative | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Advertising, marketing and promotion | 7,036.00 | 6,519.00 | 6,291.00 | 5,957.00 | 5,101.00 | 4,978.00 | 4,831.00 | 4,243.00 | 2,409.00 | -- |
| Other Operating Gains | 341.00 | 442.00 | -- | -- | -- | -- | -- | -- | -- | -- |
| Operating Expenses | 75,498.00 | 67,011.00 | 63,905.00 | 58,512.00 | 53,871.00 | 51,094.00 | 50,391.00 | 45,121.00 | 29,957.00 | 28,542.00 |
| Operating Income (Loss) | 19,009.00 | 18,018.00 | 16,831.00 | 15,998.00 | 14,904.00 | 13,563.00 | 12,179.00 | 10,721.00 | 7,980.00 | 7,214.00 |
| Interest expense | 3,542.00 | 3,086.00 | 2,942.00 | 2,702.00 | 2,617.00 | 2,574.00 | 2,521.00 | 2,505.00 | 2,156.00 | 2,348.00 |
| Equity in net losses of affiliates | -- | -- | -- | (325.00) | 97.00 | (86.00) | 959.00 | (35.00) | (141.00) | (64.00) |
| Investment income (loss), net | (225.00) | 421.00 | 437.00 | 81.00 | 296.00 | 576.00 | 219.00 | 159.00 | 288.00 | 282.00 |
| Interest and dividend income | -- | -- | -- | -- | -- | 111.00 | 119.00 | 110.00 | 94.00 | 102.00 |
| Other income (expense) | -- | -- | -- | 320.00 | (215.00) | (364.00) | 773.00 | (133.00) | 133.00 | 22.00 |
| Income related to indexed debt | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income (Loss) from Continuing Operations Before Income Taxes and Minority Intere | 15,242.00 | 15,353.00 | 14,326.00 | 13,372.00 | 12,465.00 | 11,115.00 | 11,609.00 | 8,207.00 | 6,104.00 | 5,106.00 |
| Current (expense) benefit:Federal | -- | -- | -- | -- | -- | 3,183.00 | 3,004.00 | 1,480.00 | 1,502.00 | 802.00 |
| Deferred (expense) benefitFederal | -- | -- | -- | -- | -- | (76.00) | 160.00 | 658.00 | 463.00 | 945.00 |
| Deferred (expense) benefitState | -- | -- | -- | -- | -- | 108.00 | (40.00) | 371.00 | 86.00 | (113.00) |
| Income tax expense (benefit) | 3,380.00 | (7,569.00) | 5,298.00 | 4,959.00 | 3,873.00 | 3,980.00 | 3,744.00 | 3,050.00 | 2,436.00 | 1,478.00 |
| Current expense: Foreign | -- | -- | -- | -- | -- | 200.00 | 169.00 | 153.00 | -- | -- |
| Deferred expense: Foreign | -- | -- | -- | -- | -- | (16.00) | 19.00 | 29.00 | -- | -- |
| Current (expense) benefit:State | -- | -- | -- | -- | -- | 581.00 | 432.00 | 359.00 | 385.00 | (156.00) |
| Minority interst | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income (loss) from Continuing Operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings (loss) from operation of discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on Discontinued Operations, net of tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income (loss) before cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income (loss) from consolidated operations | 11,862.00 | 22,922.00 | 9,028.00 | 8,413.00 | 8,592.00 | 7,135.00 | 7,865.00 | 5,157.00 | 3,668.00 | 3,628.00 |
| Net (income) loss attributable to noncontrolling interests | 131.00 | 187.00 | 350.00 | 250.00 | 212.00 | 319.00 | 1,662.00 | 997.00 | 33.00 | (10.00) |
| Net income (loss) attributable to Comcast Corporation | 11,731.00 | 22,735.00 | 8,678.00 | 8,163.00 | 8,380.00 | 6,816.00 | 6,203.00 | 4,160.00 | 3,635.00 | 3,638.00 |
| EPS (Basic) : Income (loss) from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Gain on discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Basic earnings (loss) per common share | 2.56 | 4.83 | 1.80 | 1.64 | 1.62 | 1.30 | 1.16 | 0.76 | 0.65 | 0.64 |
| EPS (Diluted) : Income (loss) from Continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Diluted) : Discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Diluted) : Gain on discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Diluted earnings (loss) per common share | 2.53 | 4.75 | 1.78 | 1.62 | 1.60 | 1.28 | 1.14 | 0.75 | 0.65 | 0.63 |
| Weighted Average Shares Outstanding (Basic) | 4,584.00 | 4,708.00 | 4,819.00 | 4,972.00 | 5,166.00 | 5,250.00 | 5,356.00 | 5,492.00 | 5,616.00 | 5,750.00 |
| Weighted Average Shares Outstanding (Diluted) | 4,640.00 | 4,786.00 | 4,875.00 | 5,035.00 | 5,240.00 | 5,330.00 | 5,434.00 | 5,556.00 | 5,640.00 | 5,770.00 |