Description of Business and Basis of presentation (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Dec. 31, 2019	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Effect of reclassification of expenses	$ 1	$ 2

Effects of reclassification of expenses on other segements.

No definition available.

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