Employee Benefit Plans (Fair Value of Plan Assets) (Details) - USD ($) $ in Millions	Oct. 27, 2019	Oct. 28, 2018	Oct. 29, 2017	Oct. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	$ 409	$ 365	$ 361	$ 310
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	160	107
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	14	14
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	36	36	$ 38
Assets measured at net asset value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	199	208
Total assets at fair value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	210	157
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	90	86
Equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	90	86
Equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	70	19
Debt securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	70	19
Debt securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Debt securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	36	36
Insurance contracts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Insurance contracts | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Insurance contracts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	36	36
Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	14	14
Other investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Other investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	14	14
Other investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Cash
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	2
Cash | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	2
Cash | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	0	0
Cash | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan of assets	$ 0	$ 0