DEBT Long Term Debt (Details) - USD ($) $ in Millions |
6 Months Ended | ||
|---|---|---|---|
Feb. 15, 2017 |
Apr. 30, 2017 |
Oct. 31, 2016 |
|
| Debt Instrument [Line Items] | |||
| Document Period End Date | Apr. 30, 2017 | ||
| Long-term Debt | $ 2,186 | $ 1,093 | |
| Long-term Debt, Current Maturities | 30 | 0 | |
| Long-term Debt, Excluding Current Maturities | 2,156 | 1,093 | |
| Letters of Credit Outstanding, Amount | 20 | 18 | |
| Long Term Debt Fair Value above carrying Value | 67 | 30 | |
| 3.30% Senior Notes due 2019 ($500 face amount less unamortized costs of $2 and $3) | |||
| Debt Instrument [Line Items] | |||
| Long-term Debt | 498 | 497 | |
| 4.55% Senior Notes due 2024 ($600 face amount less unamortized costs of $4 and $4) | |||
| Debt Instrument [Line Items] | |||
| Long-term Debt | 596 | 596 | |
| 4.60% Senior Notes due 2027 [Member] | |||
| Debt Instrument [Line Items] | |||
| Long-term Debt | 693 | 0 | |
| Term Loan [Member] | |||
| Debt Instrument [Line Items] | |||
| Long-term Debt | $ 399 | $ 0 | |
| Debt Instrument, Term | 3 years |