Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 49
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-18

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Segment Information - Additional Information (Detail)		3 Months Ended		9 Months Ended
Segment Information - Additional Information (Detail)	Jul. 01, 2024 Segment	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024 Station	Sep. 30, 2023
Segment Reporting Information [Line Items]
Number of operating segments \| Segment	2
Percentage of revenue generated from outside the United States		24.00%	26.00%	25.00%	29.00%
Television
Segment Reporting Information [Line Items]
Number of stations owned				49
Radio
Segment Reporting Information [Line Items]
Number of stations owned				44