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Acquisitions and Dispositions (Narrative) (Details) $ in Millions	Jul. 15, 2021 USD ($) title	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Spyglass Library
Asset Acquisition [Line Items]
Number of titles acquired | title	200
Spyglass
Asset Acquisition [Line Items]
Equity method investment, ownership percentage	18.90%
Spyglass | Spyglass Library
Asset Acquisition [Line Items]
Purchase price of asset acquisition and preferred equity interest	$ 191.4
Cash paid at closing for assets acquisition and preferred equity interest	$ 171.4
Spyglass | Spyglass Library | Forecast
Asset Acquisition [Line Items]
Asset acquisition and preferred equity interest, deferred purchase consideration payable		$ 10.0
Spyglass | Spyglass Library | Subsequent Event
Asset Acquisition [Line Items]
Asset acquisition and preferred equity interest, deferred purchase consideration payable			$ 10.0
Disposal Group, Not Discontinued Operations | Pantaya
Asset Acquisition [Line Items]
Equity interest sold				75.00%
Cash consideration				$ 123.6

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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