Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Income Statement [Abstract]
Net sales	$ 680.5	$ 646.2
Cost of sales	229.8	219.7
Gross profit	450.7	426.5
Selling, general and administrative expense	261.2	258.3
Research and development expense	21.4	22.2
Amortization of intangibles	34.7	34.9
Operating income	133.4	111.1
Interest expense	6.4	11.6
Other (income) expense, net	(12.5)	2.1
Income before income taxes	139.5	97.4
(Benefit) provision for income taxes (Note 6)	(1,961.6)	6.9
Net income	$ 2,101.1	$ 90.5
Earnings per share (Note 7):
Basic (in dollars per share)	$ 42.77	$ 1.84
Diluted (in dollars per share)	$ 42.31	$ 1.82
Number of shares used to compute earnings per share:
Basic (in shares)	49.1	49.1
Diluted (in shares)	49.7	49.7
Other comprehensive income, net of tax:
Cash flow hedges	$ 4.5	$ 0.0
Foreign currency translation adjustment, net of tax	86.2	16.7
Comprehensive income	$ 2,191.8	$ 107.2