STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) (USD $)
Share data in Millions, unless otherwise specified |
6 Months Ended | 3 Months Ended | 6 Months Ended | 0 Months Ended | 3 Months Ended | 6 Months Ended | ||||
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Apr. 30, 2013
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Apr. 30, 2012
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Apr. 30, 2012
2009 Share Repurchase Program
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Apr. 30, 2012
2009 Share Repurchase Program
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Jan. 16, 2013
2009 Share Repurchase Program
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Nov. 19, 2009
2009 Share Repurchase Program
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May 14, 2013
2013 Share Repurchase Program
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Jan. 16, 2013
2013 Share Repurchase Program
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Apr. 30, 2013
2013 Share Repurchase Program
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Apr. 30, 2013
2013 Share Repurchase Program
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Share Repurchase Program [Line Items] | ||||||||||
Share repurchase program approval date | November 19, 2009 | January 16, 2013 | ||||||||
Initial amount authorized | $ 500,000,000 | |||||||||
Increase amount authorized | 500,000,000 | |||||||||
New authorized amount | 1,000,000,000 | |||||||||
Number of shares of common stock repurchased under share repurchase program (in shares) | 1 | 2 | 3 | 5 | ||||||
Cost to repurchases shares of common stock under share repurchase program | 219,000,000 | 78,000,000 | 44,000,000 | 78,000,000 | 140,000,000 | 219,000,000 | ||||
Remaining amount authorized for repurchases under 2013 repurchase program | $ 781,000,000 | |||||||||
2009 Share repurchase program termination date | January 16, 2013 |