BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2020	Oct. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 318.1	$ 0.0
Lease liabilities	$ 320.7
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201811Member
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		301.2
Lease liabilities		$ 305.8