FAIR VALUE MEASUREMENTS, Fair value measures and impairment of long-lived assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Investments in leases [Abstract]
Terminated leasehold interest in municipal properties		$ 80
Recognized a loss from termination of leasehold interests in municipal properties		(2)
Fair Value, Measurements, Nonrecurring [Member]
Long-Lived Assets [Abstract]
Impairment long-lived assets held and used	1	0	1	0
Impairment long-lived assets held for sale	0	0	1	0
Fair Value, Measurements, Nonrecurring [Member] | Carrying value [Member]
Long-Lived Assets [Abstract]
Long-lived assets held and used	1	0	1	0
Long-lived assets held for sale	0	0	3	0
Fair Value, Measurements, Nonrecurring [Member] | Fair value [Member]
Long-Lived Assets [Abstract]
Long-lived assets held and used	0	0	0	0
Long-lived assets held for sale	$ 0	$ 0	$ 2	$ 0