Fair Value Measurements (Financial Assets Measured At Fair Value On A Recurring and Nonrecurring Basis) (Details) - USD ($) $ in Millions |
Nov. 03, 2018 |
Oct. 28, 2017 |
|---|---|---|
| Marketable equity and debt securities | $ 96 | $ 100 |
| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | ||
| Marketable equity and debt securities | 26 | 23 |
| Significant Observable Inputs (Level 2) [Member] | ||
| Marketable equity and debt securities | 70 | 77 |
| Significant Unobservable Inputs (Level 3) [Member] | ||
| Marketable equity and debt securities | $ 0 | $ 0 |