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LONG-TERM DEBT (Details) - USD ($)
$ in Millions
Jul. 31, 2017
Oct. 31, 2016
Debt Instrument    
Long-term debt $ 1,789 $ 1,888
Interest rate swap 12 16
Long-term Debt, Excluding Current Maturities 1,801 1,904
Senior Notes 2017    
Debt Instrument    
Long-term debt 0 100
Interest rate swap 0 1
Long-term Debt, Excluding Current Maturities 0 101
Senior Notes 2020    
Debt Instrument    
Long-term debt 498 498
Interest rate swap 12 15
Long-term Debt, Excluding Current Maturities 510 513
Senior Notes 2022    
Debt Instrument    
Long-term debt 398 398
Interest rate swap 0 0
Long-term Debt, Excluding Current Maturities 398 398
Senior Notes 2023    
Debt Instrument    
Long-term debt 596 595
Interest rate swap 0 0
Long-term Debt, Excluding Current Maturities 596 595
Senior Notes 2026    
Debt Instrument    
Long-term debt 297 297
Interest rate swap 0 0
Long-term Debt, Excluding Current Maturities $ 297 297
Long-term Debt | Adjustments for New Accounting Pronouncement    
Debt Instrument    
Debt Issuance Costs, Net   $ 8