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v3.23.1

Acquisitions and Dispositions - Schedule of Assumptions Used in Valuation of FCC Licenses (Detail) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2022
Measurement Input, Discount Rate [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Revenue growth rates | 9.50% | 9.50% |
Minimum [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Market revenue shares at maturity | 0.70% | 0.60% |
Operating income margins at maturity | 19.70% | 19.20% |
Minimum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Revenue growth rates | 0.30% | (1.90%) |
Maximum [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Market revenue shares at maturity | 44.70% | 44.00% |
Operating income margins at maturity | 30.40% | 32.60% |
Maximum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Revenue growth rates | 2.70% | 15.90% |
FCC License [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Market revenue shares at maturity |  |  | 5.20%
Operating income margins at maturity |  |  | 23.30%
FCC License [Member] | Measurement Input, Discount Rate [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Revenue growth rates |  |  | 9.50%
FCC License [Member] | Minimum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Revenue growth rates |  |  | 0.30%
FCC License [Member] | Maximum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member] |  |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |  |
Revenue growth rates |  |  | 1.50%

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