Revenue recognition - Revenue by geographic region (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 3,824,580	$ 3,411,905	[1],[2],[3],[4],[5],[6],[7]	$ 7,587,389	$ 6,642,445	[1],[2],[3],[4],[5],[6],[7]
North America
Disaggregation of Revenue [Line Items]
Revenues from contracts	2,421,073	2,147,822		4,806,047	4,243,987
Europe
Disaggregation of Revenue [Line Items]
Revenues from contracts	753,171	682,960		1,515,141	1,298,532
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues from contracts	607,190	539,953		1,175,324	1,025,101
Latin America
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 43,146	$ 41,170		$ 90,877	$ 74,825

[1] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[2] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[3] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[4] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[5] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[6] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[7] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.