Supply chain financing (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Payables and Accruals [Abstract]
Payable to suppliers who have elected to participate in the supply chain financing programs	$ 103		$ 85
Amounts settled through supply chain financing programs and paid to participating financial intermediaries	$ 221	$ 184