XML 57 R47.htm IDEA: XBRL DOCUMENT v3.20.2
Supplementary Financial Information - Other Current Assets (Details) - USD ($)
$ in Millions
Jul. 31, 2020
Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Supplier and other receivables $ 2,028 $ 1,951
Prepaid and other current assets 1,472 967
Value-added taxes receivable 925 957
Other current assets $ 4,425 $ 3,875