Commitments and Contingencies - Schedule of Commitments by Fiscal Year Maturity (Details) - USD ($) $ in Millions	Mar. 31, 2024	Jun. 30, 2023
Loss Contingencies [Line Items]
Total borrowings	$ 2,900	$ 2,967
Borrowings
Loss Contingencies [Line Items]
Total borrowings	2,891
Borrowings, payments due less than 1 year	35
Borrowings, payments due 1-3 years	1,080
Borrowings, payments due 3-5 years	276
Borrowings, payments due more than 5 years	1,500
Interest payments on borrowings
Loss Contingencies [Line Items]
Interest payments on borrowings, Total	645
Interest payments on borrowings, payments due less than 1 year	150
Interest payments on borrowings, payments due 1-3 years	257
Interest payments on borrowings, payments due 3-5 years	142
Interest payments on borrowings, payments due more than 5 years	$ 96