Revenue recognition - Contract assets and liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
Contract assets, current (included within Prepaid expenses and other)	$ 110,055	$ 123,705
Contract assets, noncurrent (included within Investments and other assets)	24,334	23,708
Total contract assets	134,389	147,413
Contract liabilities, current (included within Other accrued liabilities)	(222,759)	(244,799)
Contract liabilities, noncurrent (included within Other liabilities)	(53,854)	(78,239)
Total contract liabilities	(276,613)	(323,038)
Net contract liabilities	$ (142,224)	$ (175,625)