LONG-TERM DEBT LONG-TERM DEBT - Other (Details) - USD ($) $ in Millions |
Aug. 09, 2011 |
Oct. 31, 2017 |
Oct. 31, 2016 |
Sep. 15, 2016 |
Feb. 01, 2016 |
Oct. 24, 2007 |
|---|---|---|---|---|---|---|
| Debt Instrument [Line Items] | ||||||
| Interest Rate Swap | $ 11 | $ 16 | $ 300 | |||
| Notional Amount Of Terminated Interest Rate Fair Value Hedge Derivatives | $ 10 | |||||
| Senior Notes 2017 [Member] | ||||||
| Debt Instrument [Line Items] | ||||||
| Interest Rate Swap | 0 | $ 1 | ||||
| Debt Instrument, Face Amount | $ 600 | |||||
| Senior Notes 2020 [Member] | ||||||
| Debt Instrument [Line Items] | ||||||
| Interest Rate Derivatives Terminated Date | August 9, 2011 | |||||
| Notional Amount Of Terminated Interest Rate Fair Value Hedge Derivatives | $ 500 | |||||
| Terminated Interest Rate Fair Value Hedge Derivative Assets At Fair Value | $ 34 | |||||
| Terminated Interest Rate Fair Value Hedge Asset Unamortized Amount | 11 | |||||
| Cash Flow Hedges | Treasury Lock [Member] | Senior Notes 2026 [Member] | ||||||
| Debt Instrument [Line Items] | ||||||
| Remaining gain loss to be amortized on derivative | $ 9 |