Description of Business and Basis of presentation (Detail) $ in Millions	3 Months Ended
Sep. 30, 2019 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Effect of reclassification of expenses	$ 1

Effects of reclassification of expenses on other segements.

No definition available.

Name:	nws_EffectsOfReclassificationOfExpensesOnOtherSegements
Namespace Prefix:	nws_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration