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Accounting Policies - Additional Information (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Jun. 30, 2021
Accounting Policies [Abstract]    
Other receivables due from suppliers $ 987 $ 965
Long-term accounts receivable, net of allowance for doubtful accounts 3,500 3,400
Financing receivables, net $ 2,900 $ 4,400