Acquisitions and Dispositions - 2020 Mission Acquisitions - Additional Information (Details) - USD ($) $ in Millions			4 Months Ended	12 Months Ended
	Dec. 30, 2020	Sep. 01, 2020	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Operating income				$ 1,312.1	$ 1,175.4	$ 1,375.4
CW affiliate station WPIX [Member] | Mission [Member]
Business Acquisition [Line Items]
Acquisition date	Dec. 30, 2020
Cash payment	$ 85.1
Television Stations KMSS, KPEJ AND KLJB [Member] | Mission [Member] | Marshall Broadcasting Group Inc [Member]
Business Acquisition [Line Items]
Acquisition date		Sep. 01, 2020
Cash payment		$ 4.2
Purchase price		53.2
Purchase price settled against existing loans receivable		$ 49.0
2020 Mission Acquisitions [Member] | Mission [Member]
Business Acquisition [Line Items]
Revenue included in consolidated statements of operations and comprehensive income			$ 11.9
Operating income			$ 2.6