Segment Data - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021 Country Station Segment Unit	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	3
Number of business units | Unit	4
Percentage of revenue generated from outside the United States	69.00%	36.00%	18.00%
Digital
Segment Reporting Information [Line Items]
Number of countries in operation | Country	30
Television
Segment Reporting Information [Line Items]
Number of stations owned	49
Audio
Segment Reporting Information [Line Items]
Number of stations owned	46