XML 73 R62.htm IDEA: XBRL DOCUMENT v3.7.0.1
Financial Instruments (Details) - USD ($)
$ in Millions
Jan. 31, 2017
Oct. 31, 2016
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain $ 52 $ 69
Gross Unrealized Loss (12) (16)
Debt securities:    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 52 69
Gross Unrealized Loss (12) (12)
Foreign bonds    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 52 69
Other debt securities    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Loss (12) (12)
Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 0 0
Gross Unrealized Loss 0 (4)
Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Gross Unrealized Gain 0 0
Gross Unrealized Loss 0 (4)
Cost    
Cash and Cash Equivalents [Line Items]    
Cash Equivalents: 6,720 10,623
Available-for-sale securities, Cost 299 297
Total cash equivalents and available-for-sale investments 7,019 10,920
Cost | Debt securities:    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 277 276
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 219 218
Cost | Other debt securities    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 47 47
Cost | Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 22 21
Cost | Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Cost 22 21
Cost | Time deposits    
Cash and Cash Equivalents [Line Items]    
Cash Equivalents: 3,651 4,074
Cost | Money market funds    
Cash and Cash Equivalents [Line Items]    
Cash Equivalents: 3,069 6,549
Fair Value    
Cash and Cash Equivalents [Line Items]    
Cash Equivalents: 6,720 10,623
Available-for-sale securities, Estimated Fair Value 339 350
Total cash equivalents and available-for-sale investments 7,059 10,973
Fair Value | Debt securities:    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Estimated Fair Value 317 333
Fair Value | Time deposits    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Estimated Fair Value 11 11
Fair Value | Foreign bonds    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Estimated Fair Value 271 287
Fair Value | Other debt securities    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Estimated Fair Value 35 35
Fair Value | Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Estimated Fair Value 22 17
Fair Value | Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Available-for-sale securities, Estimated Fair Value 22 17
Fair Value | Time deposits    
Cash and Cash Equivalents [Line Items]    
Cash Equivalents: 3,651 4,074
Fair Value | Money market funds    
Cash and Cash Equivalents [Line Items]    
Cash Equivalents: $ 3,069 $ 6,549