FAIR VALUE MEASUREMENTS (Details) (USD $) In Millions, unless otherwise specified	Oct. 31, 2011	Oct. 31, 2010
Fair Values of Financial Instruments
Financing receivables	$ 19,923.5	$ 17,682.2
Financing receivables securitized	2,905.0	2,238.3
Short-term securitization borrowings	2,777.4	2,208.8
Long-term borrowings	16,959.9	16,814.5
Carrying Value
Fair Values of Financial Instruments
Financing receivables	19,924.0	17,682.0
Financing receivables securitized	2,905.0	2,238.0
Short-term securitization borrowings	2,777.0	2,209.0
Long-term borrowings due within one year	5,493	3,254
Long-term borrowings	16,960.0	16,815.0
Fair Value
Fair Values of Financial Instruments
Financing receivables	19,919.0	17,759.0
Financing receivables securitized	2,907.0	2,257.0
Short-term securitization borrowings	2,789.0	2,229.0
Long-term borrowings due within one year	5,564	3,309
Long-term borrowings	17,925.0	17,793.0
Equipment Operations
Fair Values of Financial Instruments
Financing receivables	14.0	9.4
Long-term borrowings	3,167.1	3,328.6
Equipment Operations | Carrying Value
Fair Values of Financial Instruments
Long-term borrowings due within one year	244	40
Long-term borrowings	3,167.0	3,329.0
Equipment Operations | Fair Value
Fair Values of Financial Instruments
Long-term borrowings due within one year	233	42
Long-term borrowings	3,771.0	3,745.0
Financial Services
Fair Values of Financial Instruments
Financing receivables	19,909.5	17,672.8
Financing receivables securitized	2,905.0	2,238.3
Short-term securitization borrowings	2,777.4	2,208.8
Long-term borrowings	13,792.8	13,485.9
Financial Services | Carrying Value
Fair Values of Financial Instruments
Long-term borrowings due within one year	5,249	3,214
Long-term borrowings	13,793.0	13,486.0
Financial Services | Fair Value
Fair Values of Financial Instruments
Long-term borrowings due within one year	5,331	3,267
Long-term borrowings	$ 14,154.0	$ 14,048.0