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STOCK-BASED COMPENSATION PLANS (Tables)
 12 Months Ended
Oct. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of compensation costs related to stock-based awards
The compensation costs related to stock-based awards were as follows:
Fiscal Years Ended October 31
 
2017
 
2016
 
2015
Stock option awards
 
$
5,496

 
$
4,606

 
$
4,704

Restricted stock and restricted stock units
 
2,300

 
1,891

 
1,756

Performance share awards
 
5,183

 
3,676

 
3,964

Unrestricted common stock awards
 
538

 
464

 
412

Total compensation cost for stock-based awards
 
$
13,517

 
$
10,637

 
$
10,836

Related tax benefit from stock-based awards
 
$
5,001

 
$
3,936

 
$
4,009
Schedule of stock options activity
The table below presents stock option activity for fiscal 2017:
 
 
Stock Option
Awards
 
Weighted-Average Exercise Price
 
Weighted-Average
Contractual Life (years)
 
Aggregate Intrinsic
Value
Outstanding as of October 31, 2016
 
4,879,984

 
$
20.07

 
5.3
 
$
135,697

Granted
 
554,364

 
55.82

 
 
 
 

Exercised
 
(954,909
)
 
11.48

 
​
 
​

Canceled/forfeited
 
(19,744
)
 
51.74

 
 
 
 

Outstanding as of October 31, 2017
 
4,459,695

 
$
26.22

 
5.3
 
$
163,369

Exercisable as of October 31, 2017
 
3,331,979

 
$
19.64

 
4.3
 
$
143,960
Schedule of total market value and the intrinsic value of options exercised
The table below presents the total market value of stock options exercised and the total intrinsic value of options exercised during the following fiscal years:
Fiscal Years Ended October 31
 
2017
 
2016
 
2015
Market value of stock options exercised
 
$
58,976

 
$
61,468

 
$
27,860

Intrinsic value of options exercised1
 
$
48,017

 
$
41,365

 
$
18,739

1 
Intrinsic value is calculated as amount by which the stock price at exercise date exceeded the option exercise price.
Schedule of weighted-average valuation assumptions of stock-based compensation
The table below illustrates the weighted-average valuation assumptions for options granted in the following fiscal periods:
Fiscal Years Ended October 31
 
2017
 
2016
 
2015
Expected life of option in years
 
6.02

 
5.97

 
5.94

Expected stock price volatility
 
22.15
%
 
24.04
%
 
29.66
%
Risk-free interest rate
 
2.03
%
 
1.80
%
 
1.61
%
Expected dividend yield
 
1.01
%
 
1.24
%
 
1.29
%
Weighted-average fair value at date of grant
 
$
12.55

 
$
8.79

 
$
8.41
Schedule of restricted stock and restricted stock unit awards granted
Factors related to the company's restricted stock and restricted stock units are as follows:
Fiscal Years Ended October 31
 
2017
 
2016
 
2015
Weighted-average fair value at date of grant
 
$
66.09

 
$
41.83

 
$
33.88

Fair value of restricted stock and restricted stock units vested
 
$
3,604

 
$
2,681

 
$
2,744
Schedule of unvested restricted stock shares and the weighted average fair value at the date of grant
The table below summarizes the activity during fiscal 2017 for unvested restricted stock units:
 
 
Restricted Stock Units
 
Weighted-Average Fair Value at Date
of Grant
Unvested as of October 31, 2016
 
139,480

 
$
34.51

Granted
 
43,167

 
66.09

Vested
 
(53,709
)
 
33.14

Forfeited
 
(4,666
)
 
37.38

Unvested as of October 31, 2017
 
124,272

 
$
45.66
Schedule of performance share awards granted
Factors related to the company's performance share awards are as follows:
Fiscal Years Ended October 31
 
2017
 
2016
 
2015
Weighted-average fair value at date of grant
 
$
54.52

 
$
38.89

 
$
32.84

Fair value of performance share awards vested
 
$
7,018

 
$
7,454

 
$
7,989
Schedule of unvested performance share awards and the weighted average fair value at the date of grant
The table below summarizes the activity during fiscal 2017 for unvested performance share awards:
 
 
Performance
Shares
 
Weighted-Average Fair Value at Date of Grant
Unvested as of October 31, 2016
 
317,850

 
$
33.95

Granted
 
74,800

 
54.52

Vested
 
(107,198
)
 
30.10

Canceled/forfeited
 
(3,301
)
 
47.96

Unvested as of October 31, 2017
 
282,151

 
$
40.71