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Broadcast Incentive Auction, Total Capital Expenditure

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Broadcast Incentive Auction, Total Legislation Funds to Reimburse Stations

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- Definition

Business Acquisition, Number Of Brands Acquired

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Business Acquisition, Number Of Professional Teams With Exclusive Regional Distribution Rights

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- Definition

Business Combination, Unadjusted Initial Consideration Expected To Be Transferred

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Disposal Group, Including Discontinued Operation, Sales Agreement Price

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Number of Stations Assigned New Channels

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Number of Television Stations Involved in Acquisition

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

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ACQUISITIONS AND DISPOSITIONS OF ASSETS - Narrative (Details) $ in Millions		1 Months Ended		3 Months Ended			9 Months Ended
	Aug. 23, 2019 USD ($) national_basketball_association_team national_hockey_league_team major_league_baseball_team professional_team	Jun. 30, 2020 USD ($) station	May 31, 2019 USD ($) brand	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) station	Sep. 30, 2019 USD ($)	Jan. 31, 2020 USD ($)
Business Acquisition [Line Items]
Gain on sale of assets				$ 39.0		$ 35.0	$ 99.0	$ 57.0
Number of stations assigned new channels \| station							100
Broadcast incentive auction, total legislation funds to reimburse stations							$ 3,000.0
Broadcast incentive auction, gain recognized on sale				20.0		28.0	72.0	50.0
Broadcast incentive auction, total capital expenditure				13.0		16.0	54.0	41.0
RSNs
Business Acquisition [Line Items]
Number of brands \| brand			21
Purchase price, unadjusted initial consideration expected to be transferred			$ 9,600.0
Purchase price	$ 9,817.0
Number of professional teams \| professional_team	42
Definite-lived intangible assets acquired	$ 6,725.0
Goodwill estimated to be deductible for tax purposes	2,400.0
Acquisition related costs				0.4		85.0	4.0	94.0
Net revenue from acquiree				673.0		352.0	2,076.0	352.0
Operating income (loss) from acquiree				$ (4,435.0)		$ 46.0	(3,830.0)	$ 46.0
RSNs \| Customer relationships, net
Business Acquisition [Line Items]
Definite-lived intangible assets acquired	$ 5,439.0
Amortization period, weighted average useful life	13 years			11 years
RSNs \| Favorable/Unfavorable Contracts With Sports Teams
Business Acquisition [Line Items]
Definite-lived intangible assets acquired	$ 1,271.0
Amortization period, weighted average useful life	12 years
RSNs \| Tradenames/Trademarks
Business Acquisition [Line Items]
Definite-lived intangible assets acquired	$ 15.0
Amortization period, weighted average useful life	2 years
Radio station assets
Business Acquisition [Line Items]
Purchase price							$ 7.0
Television station assets
Business Acquisition [Line Items]
Purchase price, unadjusted initial consideration expected to be transferred		$ 9.0
Number of television stations \| station		2
Major League Baseball \| RSNs
Business Acquisition [Line Items]
Number of professional teams \| major_league_baseball_team	14
National Basketball Association \| RSNs
Business Acquisition [Line Items]
Number of professional teams \| national_basketball_association_team	16
National Hockey League \| RSNs
Business Acquisition [Line Items]
Number of professional teams \| national_hockey_league_team	12
KGBT Non-License Assets and WDKY License and Non-License Assets \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Aggregate purchase price									$ 36.0
KGBT Non-License Assets \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Gain on sale of assets					$ 8.0
WDKY License and Non-License Assets \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Gain on sale of assets				$ 21.0