XML 53 R42.htm IDEA: XBRL DOCUMENT v3.20.2
Fair Value Measurements - Narrative (Details) - Senior Notes - USD ($)
$ in Millions
Jul. 26, 2020
Oct. 27, 2019
Schedule of Investment Income, Reported Amounts, by Category [Line Items]    
Long-term debt, principal amount $ 5,500 $ 4,750
Estimated fair value | Level 2    
Schedule of Investment Income, Reported Amounts, by Category [Line Items]    
Long-term debt fair value $ 6,900 $ 5,500