Financial instruments - Fair value of derivative instruments reported in consolidated balance sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022
Cross-currency swap contracts | Investments and other assets
Net investment hedges
Cross-currency swap contracts, assets	$ 58,602	$ 21,444
Cross-currency swap contracts | Non-trade and notes receivable
Other derivative contracts
Other derivative contracts, assets	35,127	0
Forward exchange contracts | Investments and other assets
Other derivative contracts
Other derivative contracts, assets	166	0
Forward exchange contracts | Non-trade and notes receivable
Other derivative contracts
Other derivative contracts, assets	30,302	20,976
Forward exchange contracts | Other accrued liabilities
Other derivative contracts
Other derivative contracts, liabilities	57,668	5,651
Forward exchange contracts | Other liabilities
Other derivative contracts
Other derivative contracts, liabilities	10,445	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	8,648	351
Costless collar contracts | Other accrued liabilities
Other derivative contracts
Other derivative contracts, liabilities	$ 3,169	$ 1,578