STOCKHOLDERS' EQUITY Stock Repurchase (Details) - USD ($) shares in Millions, $ in Millions |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Apr. 30, 2017 |
Apr. 30, 2017 |
Feb. 18, 2016 |
|
| Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract] | |||
| Stock Repurchase Program, Authorized Amount | $ 200 | ||
| Treasury Stock, Shares, Acquired | 0 | 0 |