Related Parties and Related Commitments and Contingencies - Combined Consolidated Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 02, 2026	Dec. 27, 2024	Jan. 02, 2026	Dec. 27, 2024
Related Party Transaction [Line Items]
Interest income	$ (12)	$ (2)	$ (28)	$ (5)
Interest expense	25	4	65	6
Research and development	327	279	643	562
Selling, general and administrative	139	142	318	272
Business separation costs	9	21	18	41
Employee termination and other	1	3	(2)	5
Total operating expenses	476	411	987	846
Related Party
Related Party Transaction [Line Items]
Interest income	0	0	0	(1)
Interest expense	0	2	0	4
Research and development	0	2	0	189
Selling, general and administrative	0	35	0	148
Business separation costs	0	21	0	41
Employee termination and other	0	3	0	5
Total operating expenses	$ 0	$ 61	$ 0	$ 383