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Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized losses, net of tax	$ 9	$ (15)	$ 9
Net change related to other comprehensive income (loss), tax	(4)	1	7
Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized losses, net of tax	(393)	(1,440)	(589)
Net change related to other comprehensive income (loss), tax	(373)	(1,428)	(602)
Translation adjustments and other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net change related to other comprehensive income (loss), tax	$ 0	$ 0	$ (9)

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