Fair Value Measurements (Financial Assets Measured At Fair Value On A Recurring and Nonrecurring Basis) (Details) - USD ($) $ in Millions	Oct. 30, 2021	Oct. 31, 2020
Marketable equity and debt securities	$ 41	$ 95
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Marketable equity and debt securities	41	32
Significant Observable Inputs (Level 2) [Member]
Marketable equity and debt securities	0	63
Significant Unobservable Inputs (Level 3) [Member]
Marketable equity and debt securities	$ 0	$ 0