Commitments and Contingencies (Contractual Obligation, Fiscal Year Maturity Schedule) (Details) $ in Thousands	Dec. 31, 2020 USD ($)	[1]
Commitments and Contingencies Disclosure [Abstract]
Total purchase obligations	$ 1,011,886
Purchase obligations, year 1	290,915
Purchase obligations, years 2-3	222,694
Purchase obligations, years 4-5	118,277
Purchase obligations, more than 5 years	$ 380,000

[1] Purchase obligations consist primarily of program rights obligations, participations, residuals, and transmission and marketing commitments.