Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Income Statement [Abstract]
Net sales	$ 763.4	$ 578.2	$ 2,163.4	$ 1,749.3
Cost of sales	247.3	217.4	709.5	638.5
Gross profit	516.1	360.8	1,453.9	1,110.8
Selling, general and administrative expense	352.5	232.8	899.6	728.3
Research and development expense	24.8	21.8	67.0	67.8
Amortization of intangibles	38.2	34.2	110.0	103.0
Operating income	100.6	72.0	377.3	211.7
Interest expense	5.6	5.7	18.1	30.1
Other expense (income), net	1.0	(0.1)	(10.7)	8.8
Income before income taxes	94.0	66.4	369.9	172.8
Provision for income taxes (Note 6)	(521.8)	11.2	(2,464.5)	15.6
Net income	$ 615.8	$ 55.2	$ 2,834.4	$ 157.2
Earnings per share (Note 7):
Basic (in dollars per share)	$ 12.50	$ 1.13	$ 57.61	$ 3.20
Diluted (in dollars per share)	$ 12.37	$ 1.12	$ 57.01	$ 3.17
Number of shares used to compute earnings per share:
Basic (in shares)	49.3	49.1	49.2	49.1
Diluted (in shares)	49.8	49.5	49.7	49.6
Other comprehensive (loss) income, net of tax:
Cash flow hedges	$ (8.9)	$ (4.6)	$ 10.8	$ (18.1)
Foreign currency translation adjustment, net of tax	(3.7)	72.7	101.4	20.5
Comprehensive income	$ 603.2	$ 123.3	$ 2,946.6	$ 159.6