Additional Financial Information - Components of Other Current Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019
Other Current Liabilities [Line Items]
Total Other current liabilities	$ 869	$ 724
Other Current Liabilities [Member]
Other Current Liabilities [Line Items]
Royalties and commissions payable	218	211
Current operating lease liabilities	183	0
Allowance for sales returns	180	192
Current tax payable	19	22
Other	269	299
Total Other current liabilities	$ 869	$ 724