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LONG-TERM DEBT (Details) (USD $)
In Millions, unless otherwise specified
Apr. 30, 2013
Oct. 31, 2012
Debt Instrument    
Amortized Principal $ 1,995 $ 1,995
Interest Rate Swap 67 73
Carrying Value of Senior Notes 2,062 2,068
Senior Notes 2015
   
Debt Instrument    
Amortized Principal 499 499
Interest Rate Swap 16 18
Carrying Value of Senior Notes 515 517
Senior Notes 2017
   
Debt Instrument    
Amortized Principal 599 599
Interest Rate Swap 24 26
Carrying Value of Senior Notes 623 625
Senior Notes 2020
   
Debt Instrument    
Amortized Principal 498 498
Interest Rate Swap 27 29
Carrying Value of Senior Notes 525 527
Senior Notes 2022
   
Debt Instrument    
Amortized Principal 399 399
Interest Rate Swap 0 0
Carrying Value of Senior Notes $ 399 $ 399