Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Income Statement [Abstract]
Net sales	$ 829.8	$ 719.5	$ 1,616.9	$ 1,400.0
Cost of sales	297.3	232.4	566.0	462.2
Gross profit	532.5	487.1	1,050.9	937.8
Selling, general and administrative expense	322.4	285.8	641.5	547.0
Research and development expense	26.3	21.0	52.4	42.4
Amortization of intangibles	51.1	37.1	93.4	71.8
Operating income	132.7	143.2	263.6	276.6
Interest expense	10.8	6.1	17.4	12.5
Other (income) expense, net	(41.8)	0.7	(39.4)	(11.8)
Income before income taxes	163.7	136.4	285.6	275.9
Provision for income taxes (Note 6)	37.1	18.9	63.8	(1,942.7)
Net income	$ 126.6	$ 117.5	$ 221.8	$ 2,218.6
Earnings per share (Note 7):
Basic (in dollars per share)	$ 2.57	$ 2.39	$ 4.49	$ 45.12
Diluted (in dollars per share)	$ 2.55	$ 2.36	$ 4.45	$ 44.65
Number of shares used to compute earnings per share:
Basic (in shares)	49.3	49.2	49.4	49.2
Diluted (in shares)	49.7	49.7	49.8	49.7
Other comprehensive income, net of tax:
Cash flow hedges	$ 39.3	$ 15.2	$ 52.7	$ 19.7
Foreign currency translation adjustment	(96.6)	18.9	(145.8)	105.1
Comprehensive income	$ 69.3	$ 151.6	$ 128.7	$ 2,343.4