Stockholders' Equity - Schedule of Components of Accumulated Other Comprehensive (Loss) Income, Net of Tax (Details) - USD ($) $ in Millions	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Equity [Abstract]
Benefit plan adjustments and other	$ (103)	$ (145)	$ (219)
Cumulative translation adjustment	(4)	(4)	(7)
Accumulated other comprehensive loss, net of tax	$ (107)	$ (149)	$ (226)

Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant