Goodwill and other intangible assets - Schedule of Indefinite-Lived Intangible Assets, and Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (289,949)	$ (348,087)
Total	204,241
Total indefinite-lived and amortizable intangible assets, gross	2,618,921	2,729,693
Total indefinite-lived and amortizable intangible assets, net	2,328,972	2,381,606
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	(95,619)	(184,796)
Total	18,002	40,031
Network affiliation agreements
Finite-Lived Intangible Assets [Line Items]
Gross	309,502	309,503
Accumulated Amortization	(144,834)	(121,664)
Total	164,668	187,839
Other
Finite-Lived Intangible Assets [Line Items]
Gross	71,067	71,465
Accumulated Amortization	(49,496)	(41,627)
Total	$ 21,571	$ 29,838