Revenue recognition - Contract assets and liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Contract assets, current (included within Other current assets)	$ 150,052	$ 136,814
Contract assets, noncurrent (included within Investments and other assets)	19,353	21,063
Total contract assets	169,405	157,877
Contract liabilities, current (included within Other accrued liabilities)	(179,333)	(183,868)
Contract liabilities, noncurrent (included within Other liabilities)	(89,633)	(77,957)
Total contract liabilities	(268,966)	(261,825)
Net contract liabilities	$ (99,561)	$ (103,948)