Stock Plans (Tables)

12 Months Ended

Oct. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of compensation expense and related income tax benefit for share-based awards

Compensation expense and the related tax benefit recognized in our consolidated financial statements for share-based awards, including the Employee Stock Purchase Plan, were as follows:

October 31,
(In millions)	2020		2019		2018
Selling, general and administrative expense	$	32.2	$	28.7	$	37.6
Cost of sales	4.0		4.7		3.6
Research and development expense	2.4		2.9		2.0
Total compensation expense	$	38.6	$	36.3	$	43.2
Related income tax benefit	$	4.8	$	5.1	$	8.8

Schedule of assumptions used in estimating fair value of stock options award granted

Years Ended October 31,	2020		2019		2018
Expected life	4.4 years		4.4 years		5.4 years
Expected volatility	24.5	%	22.0	%	23.0	%
Risk-free interest rate	1.6	%	2.9	%	2	%
Dividend yield	0.02	%	0.02	%	0.03	%

Schedule of stock option plans

The activity and status of our stock option plans are summarized below:

	Number of Shares		Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding at October 31, 2019	1,024,752		$	186.24
Granted	212,046		$	304.54
Exercised	(105,045	)	$	128.43
Forfeited or expired	(28,246	)	$	223.28
Outstanding at October 31, 2020	1,103,507		$	213.53	6.44
Vested and expected to vest at October 31, 2020	1,060,738		$	211.04	6.36	$	114,567,509
Vested and exercisable at October 31, 2020	430,926		$	167.09	5.01	$	65,485,571

Schedule of non-vested RSUs

The status of our non-vested RSUs is summarized below:

	Number of Shares		Weighted- Average Grant Date Fair Value Per Share
Non-vested RSUs at October 31, 2019	429,571		$	210.72
Granted	130,610		$	301.59
Vested and issued	(151,613	)	$	192.10
Forfeited or expired	(39,948	)	$	242.12
Non-vested RSUs at October 31, 2020	368,620		$	247.09