CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Other comprehensive income (loss), tax, parenthetical disclosures [Abstract]    
Unrealized loss on investments,tax $ 0 $ 1
Unrealized gain (loss) on derivative instruments, tax (3) 1
Amounts reclassified into earnings related to derivative instruments, tax 1 (1)
Foreign currency translation, tax 6 5
Net defined benefit pension cost and post retirement plan costs, tax [Abstract]    
Change in actuarial net loss, tax (2) (4)
Change in net prior service benefit, tax $ 2 $ 4