Additional Financial Information - Schedule of Other Non-current Assets (Details) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Royalty advances to authors	$ 361	$ 375
Retirement benefit assets	159	147
Inventory	226	226
Other	428	422
Total Other non-current assets	$ 1,174	$ 1,170

The amount paid to authors in advance of their earning royalties from the sale of books.

No definition available.

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- Definition

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

+ References

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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

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- Definition

Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
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- References

No definition available.

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- Definition

Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

+ References

No definition available.

+ Details

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- Definition

Amount of noncurrent assets classified as other.

+ References

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-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
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