OTHER COMPREHENSIVE INCOME ITEMS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Accumulated other comprehensive income (loss)
Balance at the beginning of the period			$ (3,783.0)	$ (2,693.0)
Other comprehensive income (loss) items before reclassification			(594)	(56)
Amounts reclassified from accumulated other comprehensive income (loss)			83	85
Net current period other comprehensive income (loss)	(48.6)	145.9	(510.9)	29.6
Balance at the end of the period	(4,293.6)	(2,663.5)	(4,293.6)	(2,663.5)
Retirement Benefits Adjustment
Accumulated other comprehensive income (loss)
Balance at the beginning of the period			(3,493.0)	(2,809.0)
Other comprehensive income (loss) items before reclassification			(20)	12
Amounts reclassified from accumulated other comprehensive income (loss)			83	76
Net current period other comprehensive income (loss)			63.0	88.0
Balance at the end of the period	(3,430.0)	(2,721.0)	(3,430.0)	(2,721.0)
Cumulative Translation Adjustment
Accumulated other comprehensive income (loss)
Balance at the beginning of the period			(303.0)	113.0
Other comprehensive income (loss) items before reclassification			(577)	(62)
Net current period other comprehensive income (loss)			(577.0)	(62.0)
Balance at the end of the period	(880.0)	51.0	(880.0)	51.0
Unrealized Gain (Loss) on Derivatives
Accumulated other comprehensive income (loss)
Balance at the beginning of the period				(3.0)
Other comprehensive income (loss) items before reclassification			(2)	(7)
Amounts reclassified from accumulated other comprehensive income (loss)			2	9
Net current period other comprehensive income (loss)				2.0
Balance at the end of the period		(1.0)		(1.0)
Unrealized Gain (Loss) on Investments
Accumulated other comprehensive income (loss)
Balance at the beginning of the period			13.0	6.0
Other comprehensive income (loss) items before reclassification			5	1
Amounts reclassified from accumulated other comprehensive income (loss)			(2)
Net current period other comprehensive income (loss)			3.0	1.0
Balance at the end of the period	$ 16.0	$ 7.0	$ 16.0	$ 7.0

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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