Additional Financial Information - Components of Other Current Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019
Other Current Liabilities [Line Items]
Total Other current liabilities	$ 849	$ 724
Other Current Liabilities [Member]
Other Current Liabilities [Line Items]
Royalties and commissions payable	229	211
Current operating lease liabilities	182	0
Allowance for sales returns	176	192
Current tax payable	21	22
Other	241	299
Total Other current liabilities	$ 849	$ 724