Financial instruments - Gain (losses) on derivative financial instruments recorded in consolidated statement if income (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Deal-contingent forward contracts
Derivative [Line Items]
Gains (loss) on derivative financial instruments	$ 0	$ (389,992)
Forward exchange contracts
Derivative [Line Items]
Gains (loss) on derivative financial instruments	436	(1,364)
Costless collar contracts
Derivative [Line Items]
Gains (loss) on derivative financial instruments	0	5,389
Cross-currency swap contracts
Derivative [Line Items]
Gains (loss) on derivative financial instruments	$ 0	$ 4,659

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4CC
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4CC

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration