Additional Financial Information - Components of Other Current Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Jun. 30, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Other current liabilities	$ 864	$ 838
Other Current Liabilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Royalties and commissions payable	208	169
Current operating lease liabilities	131	131
Allowance for sales returns	201	174
Current tax payable	18	50
Other	306	314
Total Other current liabilities	$ 864	$ 838