| Fiscal period | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|
| Period End Date | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
|---|
| Service revenues | 123,731.00 | 121,572.00 | 121,427.00 | 116,385.00 | 103,564.00 | 108,942.00 | 94,507.00 | 84,526.00 | 80,403.00 | 74,510.00 |
| Net sales from electronic retailing | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total Revenues | 123,731.00 | 121,572.00 | 121,427.00 | 116,385.00 | 103,564.00 | 108,942.00 | 94,507.00 | 84,526.00 | 80,403.00 | 74,510.00 |
| Operating (excluding depreciation) | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cost of goods sold from electronic retailing | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Costs and Expenses: Programming and production | 37,026.00 | 36,762.00 | 38,213.00 | 38,450.00 | 33,121.00 | 34,440.00 | 29,692.00 | 25,384.00 | 24,463.00 | 22,550.00 |
| Costs and Expenses: Other operating and administrative | 40,533.00 | 39,190.00 | 38,263.00 | 35,619.00 | 33,109.00 | 32,807.00 | 28,094.00 | 25,013.00 | 23,409.00 | 21,339.00 |
| Depreciation | 8,729.00 | 8,854.00 | 8,724.00 | 8,628.00 | 8,320.00 | 8,663.00 | 8,281.00 | 7,914.00 | 7,464.00 | 6,781.00 |
| Amortization | 6,072.00 | 5,482.00 | 5,097.00 | 5,176.00 | 4,780.00 | 4,290.00 | 2,736.00 | 2,353.00 | 2,094.00 | 1,899.00 |
| Selling, general and administrative | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Advertising, marketing and promotion | 8,073.00 | 7,971.00 | 8,506.00 | 7,695.00 | 6,741.00 | 7,617.00 | 7,036.00 | 6,317.00 | 6,114.00 | 5,943.00 |
| Other Operating Gains | -- | -- | -- | -- | -- | -- | 341.00 | 442.00 | -- | -- |
| Goodwill and long-lived asset impairments | -- | -- | (8,583.00) | -- | -- | -- | -- | -- | -- | -- |
| Operating Expenses | 100,434.00 | 98,258.00 | 107,385.00 | 95,568.00 | 86,071.00 | 87,817.00 | 75,498.00 | 66,539.00 | 63,544.00 | 58,512.00 |
| Operating Income (Loss) | 23,297.00 | 23,314.00 | 14,041.00 | 20,817.00 | 17,493.00 | 21,125.00 | 19,009.00 | 17,987.00 | 16,859.00 | 15,998.00 |
| Interest expense | 4,134.00 | 4,087.00 | 3,896.00 | 4,281.00 | 4,588.00 | 4,567.00 | 3,542.00 | 3,086.00 | 2,942.00 | 2,702.00 |
| Equity in net losses of affiliates | -- | -- | -- | -- | -- | -- | -- | 107.00 | (104.00) | (325.00) |
| Investment income (loss), net | (490.00) | 1,252.00 | (861.00) | 2,557.00 | 1,160.00 | 438.00 | (225.00) | 253.00 | 213.00 | 81.00 |
| Interest and dividend income | -- | -- | -- | -- | -- | -- | -- | -- | -- | 115.00 |
| Other income (expense) | -- | -- | -- | -- | -- | -- | -- | 61.00 | 327.00 | 320.00 |
| Income (Loss) from Continuing Operations Before Income Taxes and Minority Intere | 18,673.00 | 20,478.00 | 9,284.00 | 19,093.00 | 14,065.00 | 16,996.00 | 15,242.00 | 15,322.00 | 14,353.00 | 13,372.00 |
| Current (expense) benefit:Federal | -- | -- | -- | -- | -- | -- | -- | -- | -- | 3,210.00 |
| Deferred (expense) benefitFederal | -- | -- | -- | -- | -- | -- | -- | -- | -- | 890.00 |
| Deferred (expense) benefitState | -- | -- | -- | -- | -- | -- | -- | -- | -- | 66.00 |
| Income tax expense (benefit) | 2,796.00 | 5,371.00 | 4,359.00 | 5,259.00 | 3,364.00 | 3,673.00 | 3,380.00 | (7,578.00) | 5,308.00 | 4,959.00 |
| Current expense: Foreign | -- | -- | -- | -- | -- | -- | -- | -- | -- | 221.00 |
| Deferred expense: Foreign | -- | -- | -- | -- | -- | -- | -- | -- | -- | 2.00 |
| Current (expense) benefit:State | -- | -- | -- | -- | -- | -- | -- | -- | -- | 570.00 |
| 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 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income (loss) from consolidated operations | 15,877.00 | 15,107.00 | 4,925.00 | 13,833.00 | 10,701.00 | 13,323.00 | 11,862.00 | 22,900.00 | 9,045.00 | 8,413.00 |
| Net (income) loss attributable to noncontrolling interests | (315.00) | (282.00) | (445.00) | (325.00) | 167.00 | 266.00 | 131.00 | 186.00 | 350.00 | 250.00 |
| Net income (loss) attributable to Comcast Corporation | 16,192.00 | 15,388.00 | 5,370.00 | 14,159.00 | 10,534.00 | 13,057.00 | 11,731.00 | 22,714.00 | 8,695.00 | 8,163.00 |
| EPS (Basic) : Income (loss) from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Gain on discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Basic earnings (loss) per common share | 4.17 | 3.73 | 1.22 | 3.09 | 2.30 | 2.87 | 2.56 | 4.82 | 1.81 | 1.64 |
| EPS (Diluted) : Income (loss) from Continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Diluted) : Discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Diluted) : Gain on discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Diluted earnings (loss) per common share | 4.14 | 3.71 | 1.21 | 3.04 | 2.28 | 2.83 | 2.53 | 4.75 | 1.79 | 1.62 |
| Weighted Average Shares Outstanding (Basic) | 3,885.00 | 4,122.00 | 4,406.00 | 4,584.00 | 4,574.00 | 4,548.00 | 4,584.00 | 4,708.00 | 4,820.00 | 4,972.00 |
| Weighted Average Shares Outstanding (Diluted) | 3,908.00 | 4,148.00 | 4,430.00 | 4,654.00 | 4,624.00 | 4,610.00 | 4,640.00 | 4,786.00 | 4,876.00 | 5,036.00 |