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Related Party Transactions - Summary of Transactions with Related Parties (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Joint operations [member]    
Disclosure of transactions between related parties [line items]    
Interest income $ 1,306 $ 1,532
Net loans made to/(repayments from) related parties 4,851 12,539
Associates [member]    
Disclosure of transactions between related parties [line items]    
Purchases of goods/services 967,276 1,141,230
Interest income 2,370 826
Interest expense   11
Dividends received 126,187 509,577
Net loans made to/(repayments from) related parties $ 12,273 $ 14,547