Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized gains (losses), net of tax	$ 7	$ (4)
Net change related to other comprehensive income (loss), tax	(3)	6
Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized gains (losses), net of tax	297	(75)
Net change related to other comprehensive income (loss), tax	296	(69)
Translation adjustments and other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net change related to other comprehensive income (loss), tax	$ 0	$ 0