Note 12 - Per Share Calculations (Details Textual) - shares shares in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Exchangeable Note Unit Rate Stated Percentage	6.00%
Non Vested Stock and Outstanding Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3.4	4.2
Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3.3	10.0
Out of the Money Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3.2	4.8