Supplemental Financial Statement Data - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Mar. 28, 2025	Dec. 27, 2024	Sep. 27, 2024	Mar. 29, 2024	Dec. 29, 2023	Sep. 29, 2023	Mar. 28, 2025	Mar. 29, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 12,001	$ 12,126	$ 11,082	$ 10,896	$ 10,925	$ 11,439	$ 11,082	$ 11,439
Other comprehensive income (loss)							164
Income tax expense related to items of other comprehensive income	7			15			(8)	10
Net current-period other comprehensive income (loss)	132			(85)			156	(57)
Net transfers to Western Digital Corporation, including spin-off-related adjustments	(1,076)	(92)	583	63	152	19	(10)
Ending balance	9,161	12,001	12,126	10,939	10,896	10,925	9,161	10,939
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(434)	(243)	(452)	(315)	(398)	(343)	(452)	(343)
Net transfers to Western Digital Corporation, including spin-off-related adjustments	(4)	(6)
Ending balance	(306)	$ (434)	(243)	$ (400)	$ (315)	$ (398)	(306)	$ (400)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(208)				(208)
Other comprehensive income (loss)							(11)
Income tax expense related to items of other comprehensive income							0
Net current-period other comprehensive income (loss)							(11)
Net transfers to Western Digital Corporation, including spin-off-related adjustments							(4)
Ending balance	(223)						(223)
Unrealized Income (Losses) on Derivative Contracts
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			$ (244)				(244)
Other comprehensive income (loss)							175
Income tax expense related to items of other comprehensive income							(8)
Net current-period other comprehensive income (loss)							167
Net transfers to Western Digital Corporation, including spin-off-related adjustments							(6)
Ending balance	$ (83)						$ (83)