OTHER COMPREHENSIVE INCOME ITEMS - Amounts Recorded in and Reclassifications out of (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Other Comprehensive Income (Loss), Before Tax
Interest expense	$ (200.7)	$ (171.5)	$ (564.9)	$ (517.1)
Other operating expense	(276.6)	(223.6)	(884.7)	(659.1)
Other income	224.5	157.5	538.3	537.7
Total other comprehensive income (loss), before tax	(43.0)	(190.0)	202.0	(659.0)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Total other comprehensive income (loss), tax (expense) credit	(20.0)	(24.0)	(55.0)	(65.0)
Other Comprehensive Income (Loss), After Tax
Other Comprehensive Income (Loss), Net of Income Taxes	(63.4)	(213.9)	147.3	(724.8)
Cumulative Translation Adjustment
Other Comprehensive Income (Loss), Before Tax
Total other comprehensive income (loss), before tax	(100.0)	(256.0)	54.0	(831.0)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Total other comprehensive income (loss), tax (expense) credit	1.0	1.0		(1.0)
Other Comprehensive Income (Loss), After Tax
Other comprehensive income (loss) before reclassification, after tax			54.0	(832.0)
Other Comprehensive Income (Loss), Net of Income Taxes	(99.0)	(255.0)	54.0	(832.0)
Unrealized Gain (Loss) on Derivatives
Other Comprehensive Income (Loss), Before Tax
Other comprehensive income (loss) before reclassification, before tax	(1.0)	(4.0)	(3.0)	(8.0)
Total other comprehensive income (loss), before tax		(2.0)	2.0	(2.0)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Other comprehensive income (loss) before reclassification, tax (expense) credit		2.0	1.0	3.0
Total other comprehensive income (loss), tax (expense) credit		1.0	(1.0)	1.0
Other Comprehensive Income (Loss), After Tax
Other comprehensive income (loss) before reclassification, after tax	(1.0)	(2.0)	(2.0)	(5.0)
Reclassification from accumulated other comprehensive income, after tax			3.0	4.0
Other Comprehensive Income (Loss), Net of Income Taxes		(1.0)	1.0	(1.0)
Unrealized Gain (Loss) on Derivatives | Interest Rate Contracts | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss), Before Tax
Interest expense	1.0	3.0	6.0	9.0
Other Comprehensive Income (Loss), Tax (Expense) Credit
Reclassification from accumulated other comprehensive income, tax (expense) credit		(1.0)	(2.0)	(3.0)
Other Comprehensive Income (Loss), After Tax
Reclassification from accumulated other comprehensive income, after tax	1.0	2.0	4.0	6.0
Unrealized Gain (Loss) on Derivatives | Foreign Exchange Contracts | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss), Before Tax
Other operating expense		(1.0)	(1.0)	(3.0)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Reclassification from accumulated other comprehensive income, tax (expense) credit				1.0
Other Comprehensive Income (Loss), After Tax
Reclassification from accumulated other comprehensive income, after tax		(1.0)	(1.0)	(2.0)
Unrealized Gain (Loss) on Investments
Other Comprehensive Income (Loss), Before Tax
Other comprehensive income (loss) before reclassification, before tax	11.0	6.0	10.0	14.0
Total other comprehensive income (loss), before tax	9.0	3.0	7.0	7.0
Other Comprehensive Income (Loss), Tax (Expense) Credit
Other comprehensive income (loss) before reclassification, tax (expense) credit	(4.0)	(3.0)	(3.0)	(5.0)
Total other comprehensive income (loss), tax (expense) credit	(3.0)	(2.0)	(2.0)	(2.0)
Other Comprehensive Income (Loss), After Tax
Other comprehensive income (loss) before reclassification, after tax	7.0	3.0	7.0	9.0
Reclassification from accumulated other comprehensive income, after tax			(2.0)	(4.0)
Other Comprehensive Income (Loss), Net of Income Taxes	6.0	1.0	5.0	5.0
Unrealized Gain (Loss) on Investments | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss), Before Tax
Other income	(2.0)	(3.0)	(3.0)	(7.0)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Reclassification from accumulated other comprehensive income, tax (expense) credit	1.0	1.0	1.0	3.0
Other Comprehensive Income (Loss), After Tax
Reclassification from accumulated other comprehensive income, after tax	(1.0)	(2.0)	(2.0)	(4.0)
Retirement Benefits Adjustment
Other Comprehensive Income (Loss), Before Tax
Total other comprehensive income (loss), before tax	48.0	65.0	139.0	167.0
Other Comprehensive Income (Loss), Tax (Expense) Credit
Total other comprehensive income (loss), tax (expense) credit	(18.0)	(24.0)	(52.0)	(63.0)
Other Comprehensive Income (Loss), After Tax
Other comprehensive income (loss) before reclassification, after tax			(23.0)	(23.0)
Reclassification from accumulated other comprehensive income, after tax			110.0	127.0
Other Comprehensive Income (Loss), Net of Income Taxes	30.0	41.0	87.0	104.0
Retirement Benefits Adjustment | Pensions
Other Comprehensive Income (Loss), Before Tax
Other comprehensive income (loss) before reclassification, before tax	(7.0)	(4.0)	(24.0)	(21.0)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Other comprehensive income (loss) before reclassification, tax (expense) credit	2.0	1.0	8.0	7.0
Other Comprehensive Income (Loss), After Tax
Other comprehensive income (loss) before reclassification, after tax	(5.0)	(3.0)	(16.0)	(14.0)
Retirement Benefits Adjustment | Health Care and Life Insurance
Other Comprehensive Income (Loss), Before Tax
Other comprehensive income (loss) before reclassification, before tax			(11.0)	(12.0)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Other comprehensive income (loss) before reclassification, tax (expense) credit			4.0	3.0
Other Comprehensive Income (Loss), After Tax
Other comprehensive income (loss) before reclassification, after tax			(7.0)	(9.0)
Actuarial (Gain) Loss | Reclassification out of Accumulated Other Comprehensive Income (Loss) | Pensions
Other Comprehensive Income (Loss), Before Tax
Reclassification from accumulated other comprehensive income, before tax	51.0	55.0	155.0	165.0
Other Comprehensive Income (Loss), Tax (Expense) Credit
Reclassification from accumulated other comprehensive income, tax (expense) credit	(19.0)	(20.0)	(57.0)	(60.0)
Other Comprehensive Income (Loss), After Tax
Reclassification from accumulated other comprehensive income, after tax	32.0	35.0	98.0	105.0
Actuarial (Gain) Loss | Reclassification out of Accumulated Other Comprehensive Income (Loss) | Health Care and Life Insurance
Other Comprehensive Income (Loss), Before Tax
Reclassification from accumulated other comprehensive income, before tax	18.0	22.0	55.0	68.0
Other Comprehensive Income (Loss), Tax (Expense) Credit
Reclassification from accumulated other comprehensive income, tax (expense) credit	(6.0)	(8.0)	(20.0)	(25.0)
Other Comprehensive Income (Loss), After Tax
Reclassification from accumulated other comprehensive income, after tax	12.0	14.0	35.0	43.0
Prior Service (Credit) Cost | Reclassification out of Accumulated Other Comprehensive Income (Loss) | Pensions
Other Comprehensive Income (Loss), Before Tax
Reclassification from accumulated other comprehensive income, before tax	4.0	7.0	12.0	19.0
Other Comprehensive Income (Loss), Tax (Expense) Credit
Reclassification from accumulated other comprehensive income, tax (expense) credit	(1.0)	(2.0)	(4.0)	(7.0)
Other Comprehensive Income (Loss), After Tax
Reclassification from accumulated other comprehensive income, after tax	3.0	5.0	8.0	12.0
Prior Service (Credit) Cost | Reclassification out of Accumulated Other Comprehensive Income (Loss) | Health Care and Life Insurance
Other Comprehensive Income (Loss), Before Tax
Reclassification from accumulated other comprehensive income, before tax	(19.0)	(19.0)	(58.0)	(57.0)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Reclassification from accumulated other comprehensive income, tax (expense) credit	7.0	7.0	21.0	21.0
Other Comprehensive Income (Loss), After Tax
Reclassification from accumulated other comprehensive income, after tax	(12.0)	(12.0)	(37.0)	(36.0)
Settlements/Curtailments | Reclassification out of Accumulated Other Comprehensive Income (Loss) | Pensions
Other Comprehensive Income (Loss), Before Tax
Reclassification from accumulated other comprehensive income, before tax	1.0	4.0	10.0	5.0
Other Comprehensive Income (Loss), Tax (Expense) Credit
Reclassification from accumulated other comprehensive income, tax (expense) credit	$ (1.0)	(2.0)	(4.0)	(2.0)
Other Comprehensive Income (Loss), After Tax
Reclassification from accumulated other comprehensive income, after tax		$ 2.0	$ 6.0	$ 3.0