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Additional Financial Information - Components of Other Non-Current Assets (Detail) - USD ($)
$ in Millions
Dec. 31, 2019
Jun. 30, 2019
Assets, Noncurrent [Abstract]    
Royalty advances to authors $ 338 $ 343
Retirement benefit assets 137 117
Inventory [1] 143 155
Other 330 315
Total Other non-current assets $ 948 $ 930
[1] Primarily consists of the non-current portion of programming rights.