Business Segment Information - Summary of Information About Network Segment Significant Expenses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Revenue	$ 276.4	$ 271.6
Less: Significant and other segment expenses
Depreciation and amortization expense	84.6	77.4
Restructuring and severance related charges	3.7	0.2
Total operating costs and expenses	265.7	274.4
Network operating income	10.7	(2.8)
Operating Segments [Member] | Network [Member]
Segment Reporting Information [Line Items]
Revenue	276.4	271.6
Less: Significant and other segment expenses
Employee and related costs	45.2	55.2
Programming expense	34.8	38.6
Network expense	7.5	9.2
Contract services	22.2	22.5
Other expenses	62.1	64.7
Depreciation and amortization expense	84.6	77.4
Restructuring and severance related charges	3.7	0.2
Total operating costs and expenses	260.1	267.8
Network operating income	$ 16.3	$ 3.8