Stock Plans (Tables)

12 Months Ended

Oct. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Expense and Related Income Tax Benefit for Share-Based Awards

The compensation cost and related tax benefit recognized in our consolidated financial statements for share-based awards were as follows:

October 31,
(In millions)	2018		2017		2016
Selling, general and administrative expense	$	37.6	$	33.1	$	26.2
Cost of sales	3.6		2.8		2.6
Research and development expense	2.0		1.3		1.1
Total compensation expense	$	43.2	$	37.2	$	29.9
Related income tax benefit	$	8.8	$	11.4	$	9.0

Schedule of Assumptions Used in Estimating Fair Value of Stock Options Award Granted

The dividend yield is based on the projected annual dividend payment per share, divided by the stock price at the date of grant.

Years Ended October 31,	2018		2017		2016
Expected life	5.4 years		5.5 years		4.8 - 5.5 years
Expected volatility	23.0	%	24.5%		27.6% - 27.7%
Risk-free interest rate	2.0	%	1.2	%	1.3% - 1.5%
Dividend yield	0.03	%	0.03	%	0.04	%

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, 2017	1,064,466	$	129.33
Granted	256,639	$	229.49
Exercised	234,107	$	95.26
Forfeited or expired	—	$	—
Outstanding at October 31, 2018	1,086,998	$	160.31	7.17
Vested and expected to vest at October 31, 2018	1,055,266	$	159.19	7.13	$	104,596,614
Vested and exercisable at October 31, 2018	379,113	$	127.11	5.71	$	49,741,332

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, 2017	533,852	$	149.93
Granted	162,121	$	230.06
Vested and issued	184,121	$	139.07
Forfeited or expired	24,538	$	169.71
Non-vested RSUs at October 31, 2018	487,314	$	179.70