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STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) (USD $)
Share data in Millions, unless otherwise specified
6 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended
Apr. 30, 2014
Apr. 30, 2013
May 14, 2013
2013 Share Repurchase Program
Jan. 16, 2013
2013 Share Repurchase Program
Apr. 30, 2014
2013 Share Repurchase Program
Nov. 22, 2013
2014 Share Repurchase Program [Member]
Jan. 16, 2013
2014 Share Repurchase Program [Member]
Share Repurchase Program [Line Items]              
Share repurchase program approval date       January 16, 2013     November 22, 2013
Initial amount authorized       $ 500,000,000      
Increase amount authorized     500,000,000        
New authorized amount     1,000,000,000     1,000,000,000  
Remaining authorized repurchase amount         0    
Maintain weighted average diluted shares count           335  
Cost to repurchases shares of common stock under share repurchase program $ 150,000,000 $ 219,000,000          
Number of shares repurchased (in shares) 3 5