Additional Financial Information - Components of Other Non-Current Assets (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Jun. 30, 2020
Other Income and Expenses [Line Items]
Royalty advances to authors	$ 363	$ 348
Retirement benefit assets	130	94
Inventory	292	133
News America Marketing deferred consideration	124	111
Other	310	353
Total Other non-current assets	1,219	1,039
Inventory, net	(246)	$ (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