XML 104 R94.htm IDEA: XBRL DOCUMENT v3.7.0.1
Financial Instruments - Cash Equivalents and Available-for-Sale Investments (Details) - USD ($)
$ in Millions
Jul. 31, 2017
Oct. 31, 2016
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain $ 46 $ 49
Gross Unrealized Loss (12) (16)
Debt securities    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 42 49
Gross Unrealized Loss (12) (12)
Time deposits    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 0 0
Gross Unrealized Loss 0 0
Foreign bonds    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 42 49
Gross Unrealized Loss 0 0
Other debt securities    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 0 0
Gross Unrealized Loss (12) (12)
Equity securities    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 4 0
Gross Unrealized Loss 0 (4)
Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 4 0
Gross Unrealized Loss 0 (4)
Cost    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 4,779 10,519
Available-for-sale securities, Cost 258 202
Total cash equivalents and available-for-sale investments 5,037 10,721
Cost | Debt securities    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 248 182
Cost | Time deposits    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 11 11
Cost | Foreign bonds    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 199 131
Cost | Other debt securities    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 38 40
Cost | Equity securities    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 10 20
Cost | Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 10 20
Cost | Time deposits    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 1,422 4,024
Cost | Money market funds    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 3,357 6,495
Fair Value    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 4,779 10,519
Available-for-sale securities, Fair Value 292 235
Total cash equivalents and available-for-sale investments 5,071 10,754
Fair Value | Debt securities    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Fair Value 278 219
Fair Value | Time deposits    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Fair Value 11 11
Fair Value | Foreign bonds    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Fair Value 241 180
Fair Value | Other debt securities    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Fair Value 26 28
Fair Value | Equity securities    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Fair Value 14 16
Fair Value | Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Fair Value 14 16
Fair Value | Time deposits    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 1,422 4,024
Fair Value | Money market funds    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents $ 3,357 $ 6,495