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Consolidated Statements of Comprehensive Income (Loss) (Parentheticals) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2012	Jan. 31, 2011
Consolidated Statements of Comprehensive Income [Abstract]
Defined benefit plans, tax	$ 12	$ 0

Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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