INCOME TAXES (Detail) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Oct. 31, 2018
Income Tax Disclosure [Abstract]
Tax Cuts And Jobs Act Of 2017 change in tax rate, benefit	$ (72.0)
Tax cuts and jobs act of 2017, transition tax liability			$ 52.8
Tax cuts and jobs act of 2017, incomplete accounting, change in tax rate, deferred tax liability, provisional income tax benefit	55.1
Tax Cuts And Jobs Act Of 2017, income tax Benefit, foreign currency loss	1.7
Tax Cuts And Jobs Act Of 2017, income tax expense (benefit)	(18.6)
Income tax expense	$ (20.0)	$ 15.6