Borrowing Facilities and Debt (Details) - USD ($) $ in Millions	Jan. 27, 2019	Oct. 28, 2018
Debt Instrument [Line Items]
Long-term debt, principal amount	$ 5,400	$ 5,400
Total long-term debt	5,310	5,309
Senior Notes
Debt Instrument [Line Items]
Long-term debt, principal amount	5,350	5,350
Total unamortized discount	(10)	(11)
Total unamortized debt issuance costs	$ (30)	(30)
Senior Notes \| 2.625% Senior Notes Due 2020
Debt Instrument [Line Items]
Stated interest rate (as percent)	2.625%
Long-term debt, principal amount	$ 600	600
Effective Interest Rate	2.64%
Senior Notes \| 4.300% Senior Notes Due 2021
Debt Instrument [Line Items]
Stated interest rate (as percent)	4.30%
Long-term debt, principal amount	$ 750	750
Effective Interest Rate	4.326%
Senior Notes \| 3.900% Senior Notes Due 2025
Debt Instrument [Line Items]
Stated interest rate (as percent)	3.90%
Long-term debt, principal amount	$ 700	700
Effective Interest Rate	3.944%
Senior Notes \| 3.300% Senior Notes Due 2027
Debt Instrument [Line Items]
Stated interest rate (as percent)	3.30%
Long-term debt, principal amount	$ 1,200	1,200
Effective Interest Rate	3.342%
Senior Notes \| 5.100% Senior Notes Due 2035
Debt Instrument [Line Items]
Stated interest rate (as percent)	5.10%
Long-term debt, principal amount	$ 500	500
Effective Interest Rate	5.127%
Senior Notes \| 5.850% Senior Notes Due 2041
Debt Instrument [Line Items]
Stated interest rate (as percent)	5.85%
Long-term debt, principal amount	$ 600	600
Effective Interest Rate	5.879%
Senior Notes \| 4.350% Senior Notes Due 2047
Debt Instrument [Line Items]
Stated interest rate (as percent)	4.35%
Long-term debt, principal amount	$ 1,000	$ 1,000
Effective Interest Rate	4.361%

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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