Related Party Transactions and Twenty-First Century Fox, Inc. Investment (Due to Related Parties) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Related Party Transactions [Abstract]
Due to related parties	$ 50	$ 143

Carrying amount as of the balance sheet date of obligations due all related parties.

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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.4-08.(k)(1))
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant