Supply chain financing (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023
Payables and Accruals [Abstract]
Payable to suppliers who have elected to participate in the supply chain financing programs	$ 85		$ 85
Amounts settled through supply chain financing programs and paid to participating financial intermediaries	$ 72	$ 37