Financial instruments - Fair value of derivative instruments reported in consolidated balance sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jun. 30, 2022
Cross-currency swap contracts | Investments and other assets
Net investment hedges
Cross-currency swap contracts, assets	$ 22,615	$ 21,444
Cross-currency swap contracts | Non-trade and notes receivable
Other derivative contracts
Other derivative contracts, assets	17,327	0
Cross-currency swap contracts | Other liabilities
Net investment hedges
Cross-currency swap contracts, liability	43	0
Forward exchange contracts | Investments and other assets
Other derivative contracts
Other derivative contracts, assets	48	0
Forward exchange contracts | Non-trade and notes receivable
Other derivative contracts
Other derivative contracts, assets	16,494	20,976
Forward exchange contracts | Other accrued liabilities
Other derivative contracts
Other derivative contracts, liabilities	43,611	5,651
Forward exchange contracts | Other liabilities
Other derivative contracts
Other derivative contracts, liabilities	2,815	0
Deal-contingent forward contracts | Other accrued liabilities
Other derivative contracts
Other derivative contracts, liabilities	0	1,015,426
Costless collar contracts | Non-trade and notes receivable
Other derivative contracts
Other derivative contracts, assets	5,395	351
Costless collar contracts | Other accrued liabilities
Other derivative contracts
Other derivative contracts, liabilities	$ 2,123	$ 1,578