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Note 11 - Goodwill and Intangible Assets - Changes in Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Goodwill |  |  | $ 1,460 |
Goodwill, Net additions |  |  | 173 |
Goodwill | $ 1,633 |  | 1,633 |
Broadcast licenses |  |  | 3,579 |
Broadcast licenses | 3,784 |  | 3,784 |
Finite-lived intangible assets |  |  | 395 |
Finite-lived intangible assets, Net additions |  |  | 93 |
Amortization of Intangible Assets | (28) | $ (26) | (81) | $ (78)
Finite-lived intangible assets | 407 |  | 407 |
Total intangible assets net of accumulated amortization |  |  | 5,434 |
Total intangible assets net of accumulated amortization, Net additions |  |  | 471 |
Total intangible assets net of accumulated amortization | 5,824 |  | 5,824 |
Goodwill, gross |  |  | 1,559 |
Goodwill, impairments |  |  | 0 |
Goodwill, gross | 1,732 |  | 1,732 |
Accumulated goodwill impairment | (99) |  | (99) |
Broadcast Licenses [Member] |  |  |  |
Broadcast licenses |  |  | 3,579 |
Broadcast licenses, Net additions |  |  | 205 |
Broadcast licenses | $ 3,784 |  | $ 3,784 |

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