Long-Term Borrowings (Details) (USD $) In Millions, unless otherwise specified	Oct. 31, 2014	Oct. 31, 2013
Long-Term Borrowings
Total senior debt	$ 17,071.3us-gaap_LongTermNotesPayable	$ 14,209.6us-gaap_LongTermNotesPayable
Unamortized debt discount	(15.0)	(14.5)
Total	17,056.3us-gaap_LongTermDebtNoncurrent	14,195.1us-gaap_LongTermDebtNoncurrent
Principal Amounts of Long-Term Borrowings Maturing in Each of Next Five Years
2015	3,899
2016	4,496
2017	3,650
2018	2,678
2019	2,528
Medium-term notes due 2015-2024
Long-Term Borrowings
Total senior debt	16,573.0	13,693.4
Principal amount	16,375	13,447
Average interest rates (as a percent)	1.10%	1.10%
2.75% Senior notes due 2022
Long-Term Borrowings
Total senior debt	498.1	491.1
Debt instrument, stated interest rate (as a percent)	2.75%	2.75%
Principal amount	500	500
Portion of debt swapped to variable interest rates, amount	500	500
Variable interest rates, debt swaps (as a percent)	0.90%	0.90%
Other notes
Long-Term Borrowings
Total senior debt	$ 0.2	$ 25.1

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Weighted average interest rate of long-term debt outstanding.

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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