Related Party Transactions and Twenty-First Century Fox, Inc. Investment (Due to Related Parties) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Related Party Transactions [Abstract]
Due to related parties	$ 67	$ 50

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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant