Commitments and Contingencies - Schedule of Commitments by Fiscal Year Maturity (Detail) - USD ($) $ in Millions		Dec. 31, 2019	Jun. 30, 2019
Commitments and Contingencies [Line Items]
Total borrowings		$ 1,201	$ 1,453
Borrowings [Member]
Commitments and Contingencies [Line Items]
Total borrowings		1,199
Borrowings, Payments due Less than 1 year		0
Borrowings, Payments due 1-3 years		875
Borrowings, Payments due 3-5 years		324
Borrowings, Payments due More than 5 years		0
Interest Payments on Borrowings [Member]
Commitments and Contingencies [Line Items]
Interest payments on borrowings, Total	[1]	170
Interest payments on borrowings, Payments due Less than 1 year	[1]	50
Interest payments on borrowings, Payments due 1-3 years	[1]	89
Interest payments on borrowings, Payments due 3-5 years	[1]	31
Interest payments on borrowings, Payments due More than 5 years	[1]	$ 0

[1] Reflects the Company’s expected future interest payments on borrowings outstanding and interest rates applicable at December 31, 2019. Such rates are subject to change in future periods. See Note 5 —Borrowings.