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Goodwill and other intangible assets - Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Goodwill and Intangible Assets Disclosure [Abstract] |  |
Goodwill | $ 2,981,587 | $ 2,981,587
Accumulated Amortization | 0 | 0
Finite-Lived Intangible Assets [Line Items] |  |
Accumulated Amortization | (250,187) | (348,087)
Total indefinite-lived and amortizable intangible assets | 2,619,045 | 2,729,693
Television and radio station FCC broadcast licenses |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Television and radio station FCC broadcast licenses | 2,124,731 | 2,123,898
Retransmission agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 113,621 | 224,827
Accumulated Amortization | (79,311) | (184,796)
Network affiliation agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 309,503 | 309,503
Accumulated Amortization | (127,457) | (121,664)
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 71,190 | 71,465
Accumulated Amortization | $ (43,419) | $ (41,627)

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