Additional Financial Information - Components of Other Non-Current Assets (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020
Other Income and Expenses [Line Items]
Royalty advances to authors	$ 346	$ 348
Retirement benefit assets	108	94
Inventory	282	133
News America Marketing deferred consideration	117	111
Other	322	353
Total Other non-current assets	$ 1,175	1,039
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201902Member
Inventory, net	$ (203)	$ (348)
Revision of Prior Period, Accounting Standards Update, Adjustment | Accounting Standards Update 2019-02
Other Income and Expenses [Line Items]
Total Other non-current assets	151
Inventory, net	$ 151