SEGMENT AND GEOGRAPHIC AREA DATA FOR THE YEARS ENDED OCTOBER 31, 2015, 2014 AND 2013 (Details 5) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 31, 2015 USD ($)	Jul. 31, 2015 USD ($)	Apr. 30, 2015 USD ($)	Jan. 31, 2015 USD ($)	Oct. 31, 2014 USD ($)	Jul. 31, 2014 USD ($)	Apr. 30, 2014 USD ($)	Jan. 31, 2014 USD ($)	Oct. 31, 2015 USD ($) item	Oct. 31, 2014 USD ($)	Oct. 31, 2013 USD ($)
SEGMENT AND GEOGRAPHIC AREA DATA FOR THE YEARS ENDED OCTOBER 31, 2015, 2014 AND 2013
Number of geographic areas for which operations are historically disclosed (in segments) | item									2
Geographic Area Information
Net sales	$ 5,932.0	$ 6,839.0	$ 7,399.0	$ 5,605.0	$ 8,043.0	$ 8,723.0	$ 9,246.0	$ 6,949.0	$ 25,775.2	$ 32,960.6	$ 34,997.9
Revenues	$ 6,715.0	$ 7,594.0	$ 8,171.0	$ 6,383.0	$ 8,965.0	$ 9,500.0	$ 9,948.0	$ 7,654.0	28,862.8	36,066.9	37,795.4
Operating profit (loss)									3,140.0	5,218.0	5,928.0
Equipment Operations
Geographic Area Information
Net sales									25,775.2	32,960.6	34,997.9
Revenues									26,454.9	33,659.7	35,627.8
Financial Services
Geographic Area Information
Revenues									2,815.9	2,805.2	2,568.9
U.S. and Canada:
Geographic Area Information
Revenues									18,750.0	22,391.0	23,852.0
Operating profit (loss)									2,445.0	4,038.0	4,768.0
U.S. and Canada: | Equipment Operations
Geographic Area Information
Net sales									$ 16,498.0	20,171.0	21,821.0
Approximate percentage of net sales and revenues that relates to the U.S. only, based on three-year average									87.00%
Operating profit (loss)									$ 1,643.0	3,311.0	4,062.0
Number of years used in average percentage of U.S. only as a proportion of the combined U.S. and Canada net sales and revenues									3 years
U.S. and Canada: | Financial Services
Geographic Area Information
Revenues									$ 2,252.0	2,220.0	2,031.0
Approximate percentage of net sales and revenues that relates to the U.S. only, based on three-year average									78.00%
Operating profit (loss)									$ 802.0	727.0	706.0
Outside U.S. and Canada:
Geographic Area Information
Revenues									9,616.0	13,147.0	13,495.0
Operating profit (loss)									695.0	1,180.0	1,160.0
Outside U.S. and Canada: | Equipment Operations
Geographic Area Information
Net sales									9,277.0	12,790.0	13,177.0
Operating profit (loss)									534.0	986.0	996.0
Outside U.S. and Canada: | Financial Services
Geographic Area Information
Revenues									339.0	357.0	318.0
Operating profit (loss)									161.0	194.0	164.0
Other Revenues
Geographic Area Information
Revenues									$ 497.0	$ 529.0	$ 448.0