SUPPLEMENTAL CONSOLIDATING DATA - Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Cash Flows from Operating Activities
Net income (loss)	$ 488.6	$ 511.7	$ 1,237.0	$ 1,589.4
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Provision (credit) for credit losses			70.3	35.4
Provision for depreciation and amortization			1,158.4	1,029.2
Impairment charges			49.7
Undistributed earnings of unconsolidated subsidiaries and affiliates			0.7	(5.2)
Provision (credit) for deferred income taxes			155.5	73.0
Changes in assets and liabilities:
Trade receivables			(588.1)	(598.0)
Insurance receivables				333.4
Inventories			(380.1)	(941.5)
Accounts payable and accrued expenses			(461.9)	(594.6)
Accrued income taxes payable/receivable			78.3	(58.1)
Retirement benefits			145.8	293.4
Other			(197.5)	(12.3)
Net cash provided by (used for) operating activities			1,319.9	1,191.8
Cash Flows from Investing Activities
Proceeds from maturities and sales of marketable securities			139.2	833.0
Proceeds from sales of equipment on operating leases			916.6	773.7
Proceeds from sales of business and unconsolidated affiliates, net of cash sold			81.1	149.2
Purchases of marketable securities			(149.9)	(100.8)
Purchases of property and equipment			(387.0)	(461.4)
Cost of equipment on operating leases acquired			(1,730.6)	(1,355.7)
Acquisitions of businesses, net of cash acquired			(198.9)
Other			77.8	(23.4)
Net cash provided by (used for) investing activities			(362.4)	169.6
Cash Flows from Financing Activities
Increase (decrease) in total short-term borrowings			(133.7)	1,805.2
Proceeds from long-term borrowings			4,115.2	3,639.8
Payments of long-term borrowings			(3,977.3)	(3,980.1)
Proceeds from issuance of common stock			17.5	170.4
Repurchases of common stock			(205.4)	(1,833.9)
Dividends paid			(572.6)	(617.9)
Excess tax benefits from share-based compensation			3.8	18.5
Other			(53.6)	(56.9)
Net cash provided by (used for) financing activities			(806.1)	(854.9)
Effect of Exchange Rate Changes on Cash and Cash Equivalents			7.4	(162.7)
Net Increase (Decrease) in Cash and Cash Equivalents			158.8	343.8
Cash and Cash Equivalents at Beginning of Period			4,162.2	3,787.0
Cash and Cash Equivalents at End of Period	4,321.0	4,130.8	4,321.0	4,130.8
Equipment Operations
Cash Flows from Operating Activities
Net income (loss)	488.6	511.7	1,237.0	1,589.4
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Provision (credit) for credit losses			5.3	2.1
Provision for depreciation and amortization			613.7	605.6
Undistributed earnings of unconsolidated subsidiaries and affiliates			55.9	(4.9)
Provision (credit) for deferred income taxes			(77.0)	(39.6)
Changes in assets and liabilities:
Trade receivables			(57.5)	37.2
Inventories			59.5	(473.2)
Accounts payable and accrued expenses			(285.6)	(113.4)
Accrued income taxes payable/receivable			72.4	(82.9)
Retirement benefits			139.6	282.1
Other			(118.8)	145.8
Net cash provided by (used for) operating activities			1,644.5	1,948.2
Cash Flows from Investing Activities
Proceeds from maturities and sales of marketable securities			75.6	700.1
Proceeds from sales of business and unconsolidated affiliates, net of cash sold			81.1
Purchases of marketable securities			(61.0)	(49.1)
Purchases of property and equipment			(385.4)	(458.1)
Acquisitions of businesses, net of cash acquired			(198.9)
Other			(24.2)	2.2
Net cash provided by (used for) investing activities			(512.8)	195.1
Cash Flows from Financing Activities
Increase (decrease) in total short-term borrowings			(170.0)	318.5
Change in intercompany receivables/payables			(12.1)	447.2
Proceeds from long-term borrowings			139.4	6.7
Payments of long-term borrowings			(70.3)	(147.1)
Proceeds from issuance of common stock			17.5	170.4
Repurchases of common stock			(205.4)	(1,833.9)
Dividends paid			(572.6)	(617.9)
Excess tax benefits from share-based compensation			3.8	18.5
Other			(28.7)	(38.1)
Net cash provided by (used for) financing activities			(898.4)	(1,675.7)
Effect of Exchange Rate Changes on Cash and Cash Equivalents			1.6	(129.7)
Net Increase (Decrease) in Cash and Cash Equivalents			234.9	337.9
Cash and Cash Equivalents at Beginning of Period			2,900.0	2,569.2
Cash and Cash Equivalents at End of Period	3,134.9	2,907.1	3,134.9	2,907.1
Financial Services
Cash Flows from Operating Activities
Net income (loss)	125.9	153.4	357.9	480.0
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Provision (credit) for credit losses			65.0	33.3
Provision for depreciation and amortization			615.5	503.2
Impairment charges			49.7
Undistributed earnings of unconsolidated subsidiaries and affiliates			(1.0)	(0.8)
Provision (credit) for deferred income taxes			232.5	112.6
Changes in assets and liabilities:
Insurance receivables				333.4
Accounts payable and accrued expenses			7.8	(322.3)
Accrued income taxes payable/receivable			5.9	24.8
Retirement benefits			6.2	11.3
Other			56.8	(25.5)
Net cash provided by (used for) operating activities			1,396.3	1,150.0
Cash Flows from Investing Activities
Collections of receivables (excluding trade and wholesale)			12,208.1	12,516.5
Proceeds from maturities and sales of marketable securities			63.6	132.9
Proceeds from sales of equipment on operating leases			916.6	773.7
Proceeds from sales of business and unconsolidated affiliates, net of cash sold				149.2
Cost of receivables acquired (excluding trade and wholesale)			(11,236.7)	(12,063.2)
Purchases of marketable securities			(88.9)	(51.7)
Purchases of property and equipment			(1.6)	(3.3)
Cost of equipment on operating leases acquired			(2,324.8)	(1,988.6)
Decrease (increase) in trade and wholesale receivables			(786.5)	(924.0)
Other			70.7	(22.1)
Net cash provided by (used for) investing activities			(1,179.5)	(1,480.6)
Cash Flows from Financing Activities
Increase (decrease) in total short-term borrowings			36.3	1,486.7
Change in intercompany receivables/payables			12.1	(447.2)
Proceeds from long-term borrowings			3,975.8	3,633.1
Payments of long-term borrowings			(3,907.0)	(3,833.0)
Dividends paid			(412.1)	(479.6)
Other			(3.8)	9.5
Net cash provided by (used for) financing activities			(298.7)	369.5
Effect of Exchange Rate Changes on Cash and Cash Equivalents			5.8	(33.0)
Net Increase (Decrease) in Cash and Cash Equivalents			(76.1)	5.9
Cash and Cash Equivalents at Beginning of Period			1,262.2	1,217.8
Cash and Cash Equivalents at End of Period	$ 1,186.1	$ 1,223.7	$ 1,186.1	$ 1,223.7