|
Fair Value Measurements (Details) (USD $)
In Millions
|
3 Months Ended |
6 Months Ended |
|
Apr. 30, 2011
|
Apr. 30, 2010
|
Apr. 30, 2011
|
Apr. 30, 2010
|
| Significant unobservable inputs (level 3) reconciliation [Rollforward] |
 |
 |
 |
 |
| Balance, beginning of period |
$ 0 |
$ 3 |
$ 0 |
$ 6 |
| Realized losses related to amortization of premium |
0 |
(1) |
0 |
(1) |
| Realized losses related to investment impairments |
0 |
0 |
0 |
0 |
| Sales |
0 |
0 |
0 |
(2) |
| Transfers into level 3 |
0 |
0 |
0 |
0 |
| Transfers out of level 3 |
0 |
(1) |
0 |
(2) |
| Balance, end of period |
0 |
1 |
0 |
1 |
| Total losses included in net income attributable to change in unrealized losses relating to assets still held at the reporting date, reported in interest and other income, net |
0 |
(1) |
0 |
(1) |
| Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Financial Statement Captions [Line Items] |
 |
 |
 |
 |
| Impairment of Long-lived assets held and used |
4 |
1 |
4 |
6 |
| Impairment of Long-lived assets held for sale |
1 |
0 |
1 |
14 |
|
Estimate of Fair Value, Fair Value Disclosure [Member]
|
 |
 |
 |
 |
| Assets, Short-term [Abstract] |
 |
 |
 |
 |
| Cash equivalents (money market funds) |
1,388 |
 |
1,388 |
 |
| Derivative instruments (foreign exchange contracts) |
41 |
 |
41 |
 |
| Assets, Long-term [Abstract] |
 |
 |
 |
 |
| Trading securities |
52 |
 |
52 |
 |
| Derivative instruments (interest rate contracts) |
26 |
 |
26 |
 |
| Available-for-sale investments |
2 |
 |
2 |
 |
| Total assets measured at fair value |
1,509 |
 |
1,509 |
 |
| Liabilities, Short-term [Abstract] |
 |
 |
 |
 |
| Derivative instruments (foreign exchange contracts) |
25 |
 |
25 |
 |
| Liabilities, Long-term [Abstract] |
 |
 |
 |
 |
| Derivative instruments (interest rate contracts) |
9 |
 |
9 |
 |
| Deferred compensation liability |
50 |
 |
50 |
 |
| Total liabilities measured at fair value |
84 |
 |
84 |
 |
|
Estimate of Fair Value, Fair Value Disclosure [Member]
|
 |
 |
 |
 |
| Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Financial Statement Captions [Line Items] |
 |
 |
 |
 |
| Long-lived assets held and used |
0 |
 |
0 |
 |
| Long-lived assets held and used |
 |
0 |
 |
23 |
| Long-lived assets held for sale |
3 |
 |
3 |
 |
| Long-lived assets held for sale |
 |
 |
 |
16 |
|
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
|
 |
 |
 |
 |
| Assets, Short-term [Abstract] |
 |
 |
 |
 |
| Cash equivalents (money market funds) |
1,388 |
 |
1,388 |
 |
| Derivative instruments (foreign exchange contracts) |
0 |
 |
0 |
 |
| Assets, Long-term [Abstract] |
 |
 |
 |
 |
| Trading securities |
52 |
 |
52 |
 |
| Derivative instruments (interest rate contracts) |
0 |
 |
0 |
 |
| Available-for-sale investments |
2 |
 |
2 |
 |
| Total assets measured at fair value |
1,442 |
 |
1,442 |
 |
| Liabilities, Short-term [Abstract] |
 |
 |
 |
 |
| Derivative instruments (foreign exchange contracts) |
0 |
 |
0 |
 |
| Liabilities, Long-term [Abstract] |
 |
 |
 |
 |
| Derivative instruments (interest rate contracts) |
0 |
 |
0 |
 |
| Deferred compensation liability |
0 |
 |
0 |
 |
| Total liabilities measured at fair value |
0 |
 |
0 |
 |
|
Significant Other Observable Inputs, Level 2 [Member]
|
 |
 |
 |
 |
| Assets, Short-term [Abstract] |
 |
 |
 |
 |
| Cash equivalents (money market funds) |
0 |
 |
0 |
 |
| Derivative instruments (foreign exchange contracts) |
41 |
 |
41 |
 |
| Assets, Long-term [Abstract] |
 |
 |
 |
 |
| Trading securities |
0 |
 |
0 |
 |
| Derivative instruments (interest rate contracts) |
26 |
 |
26 |
 |
| Available-for-sale investments |
0 |
 |
0 |
 |
| Total assets measured at fair value |
67 |
 |
67 |
 |
| Liabilities, Short-term [Abstract] |
 |
 |
 |
 |
| Derivative instruments (foreign exchange contracts) |
25 |
 |
25 |
 |
| Liabilities, Long-term [Abstract] |
 |
 |
 |
 |
| Derivative instruments (interest rate contracts) |
9 |
 |
9 |
 |
| Deferred compensation liability |
50 |
 |
50 |
 |
| Total liabilities measured at fair value |
84 |
 |
84 |
 |
|
Significant Unobservable Inputs, Level 3 [Member]
|
 |
 |
 |
 |
| Assets, Short-term [Abstract] |
 |
 |
 |
 |
| Cash equivalents (money market funds) |
0 |
 |
0 |
 |
| Derivative instruments (foreign exchange contracts) |
0 |
 |
0 |
 |
| Assets, Long-term [Abstract] |
 |
 |
 |
 |
| Trading securities |
0 |
 |
0 |
 |
| Derivative instruments (interest rate contracts) |
0 |
 |
0 |
 |
| Available-for-sale investments |
0 |
 |
0 |
 |
| Total assets measured at fair value |
0 |
 |
0 |
 |
| Liabilities, Short-term [Abstract] |
 |
 |
 |
 |
| Derivative instruments (foreign exchange contracts) |
0 |
 |
0 |
 |
| Liabilities, Long-term [Abstract] |
 |
 |
 |
 |
| Derivative instruments (interest rate contracts) |
0 |
 |
0 |
 |
| Deferred compensation liability |
0 |
 |
0 |
 |
| Total liabilities measured at fair value |
0 |
 |
0 |
 |
|
Carrying (Reported) Amount, Fair Value Disclosure [Member]
|
 |
 |
 |
 |
| Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Financial Statement Captions [Line Items] |
 |
 |
 |
 |
| Long-lived assets held and used |
4 |
 |
4 |
 |
| Long-lived assets held and used |
 |
1 |
 |
29 |
| Long-lived assets held for sale |
4 |
 |
4 |
 |
| Long-lived assets held for sale |
 |
 |
 |
$ 30 |