Fair Value Measurements (Financial Assets Measured At Fair Value On A Recurring and Nonrecurring Basis) (Details) - USD ($) $ in Millions	Oct. 31, 2020	Nov. 02, 2019
Marketable equity and debt securities	$ 95	$ 92
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Marketable equity and debt securities	32	33
Significant Observable Inputs (Level 2) [Member]
Marketable equity and debt securities	63	59
Significant Unobservable Inputs (Level 3) [Member]
Marketable equity and debt securities	$ 0	$ 0