CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Apr. 30, 2017
Apr. 30, 2016
Other comprehensive income (loss):        
Net Income $ 49 $ 88 $ 158 $ 152
Unrealized gain (loss) on investments, net of tax benefit of $1, zero, zero and $1 0 (1) 4 (7)
Unrealized gain (loss) on derivative instruments, net of tax benefit (expense) of zero, $1, $(1) and zero (1) (2) 1 (1)
Amounts reclassified into earnings related to derivative instruments, net of tax expense of $1, $1, $1 and $2 0 2 1 5
Foreign currency translation, net of tax benefit (expense) of zero 9 56 (15) 31
Net defined benefit pension cost and post retirement plan costs:        
Change in actuarial net loss, net of tax expense of $5, $4, $18 and $10 12 10 40 22
Change in net prior service credit, net of tax benefit of $2, $2, $4 and $5 (4) (5) (8) (8)
Other comprehensive income (loss) 16 60 23 42
Total comprehensive income $ 65 $ 148 $ 181 $ 194