Revenue recognition - Revenue by geographic region (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021		Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 4,674,811	$ 3,824,580	[1]	$ 8,907,586	$ 7,587,389	[1],[2]
North America
Disaggregation of Revenue [Line Items]
Revenues from contracts	3,079,738	2,421,073		5,914,658	4,806,047
Europe
Disaggregation of Revenue [Line Items]
Revenues from contracts	942,070	753,171		1,696,002	1,515,141
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues from contracts	599,135	607,190		1,187,533	1,175,324
Latin America
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 53,868	$ 43,146		$ 109,393	$ 90,877

[1] *Prior period amounts have been reclassified to reflect the income statement reclassification as described in Note 1.

[2] *Prior period amounts have been reclassified to reflect the income statement reclassification as described in Note 1.