Financing Receivables - Schedule of Financing Receivables (Details) - USD ($) $ in Millions	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023	Jul. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross	$ 6,610	$ 6,823
Residual value	66	67
Unearned income	(99)	(111)
Allowance for credit loss	(50)	(65)	$ (72)	$ (126)
Total, net	6,527	6,714
Current	3,061	3,338
Noncurrent	3,466	3,376
Loan Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross	5,628	5,858
Unearned income	0	0
Allowance for credit loss	(37)	(50)	(53)	(103)
Total, net	5,591	5,808
Current	2,715	3,071
Noncurrent	2,876	2,737
Lease Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross	982	965
Residual value	66	67
Unearned income	(99)	(111)
Allowance for credit loss	(13)	(15)	$ (19)	$ (23)
Total, net	936	906
Current	346	267
Noncurrent	$ 590	$ 639