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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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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.

+ References

No definition available.

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This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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Redemption value, as if currently redeemable, of redeemable noncontrolling interest for other shares, units or ownership interests classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date.

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Fair Value (Narrative) (Details)	3 Months Ended	12 Months Ended
Fair Value (Narrative) (Details)	Sep. 30, 2020 USD ($) Customer	Jun. 30, 2020 USD ($) Customer	Oct. 31, 2020 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Noncontrolling interests, description	As of September 30, 2020, a portion of the sports network minority shareholder’s put right was exercisable. In October 2020, the sports network minority shareholder exercised its put right to sell this portion of its interest to the Company for approximately $135 million. The final put right held by the sports network minority shareholder will become exercisable in July 2021. The put right held by the Credible minority shareholder will become exercisable in fiscal 2025
Accounts Receivable \| Credit Concentration Risk
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Concentration of risk, Accounts receivable	$ 0	$ 0
Number of major customers \| Customer	0	0
Accounts Receivable \| Credit Concentration Risk \| Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Concentration risk percentage	10.00%	10.00%
Subsequent Event
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Minority shareholder exercised put right			$ 135,000,000