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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Restricted stock and restricted stock unit activity
Fiscal year 2014 activity of restricted stock and restricted stock units subject to performance and/or market conditions is presented below:
 
Shares/
Units
 
Weighted
Average
Grant Date
Fair Value
Nonvested at September 30, 2013
242,268

 
$
34.15

Granted (maximum shares that can be earned)
125,727

 
$
37.21

Vested
(52,954
)
 
$
32.16

Forfeited
(22,022
)
 
$
29.35

Nonvested at September 30, 2014
293,019

 
$
36.18

Time-vested restricted stock and stock unit activity for fiscal year 2014 is presented below:
 
Shares/
Units
 
Weighted
Average
Grant Date
Fair Value
Nonvested at September 30, 2013
119,404

 
$
38.64

Granted
76,568

 
$
45.74

Vested
(35,579
)
 
$
40.46

Forfeited
(19,300
)
 
$
38.78

Nonvested at September 30, 2014
141,093

 
$
42.02
Stock option awards activity
No stock options were granted during fiscal years 2014, 2013, and 2012. Stock option activity for fiscal year 2014 is presented below:
 
Stock
Options
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term
(Years)
 
Aggregate
Intrinsic
Value
($Millions)
Outstanding at September 30, 2013
133,500

 
$
31.87

 
 
 
 
Granted
—

 
$
—

 
 
 
 
Exercised
(53,750
)
 
$
31.07

 
 
 
 
Forfeited
—

 
$
—

 
 
 
 
Expired
—

 
$
—

 
 
 
 
Outstanding at September 30, 2014
79,750

 
$
32.42

 
1.1
 
$
1.1

Fully Vested and Expected to Vest at September 30, 2014
79,750

 
$
32.42

 
1.1
 
$
1.1

Exercisable at September 30, 2014
79,750

 
$
32.42

 
1.1
 
$
1.1
Significant assumptions used in the Monte Carlo simulations
The significant assumptions used in the Monte Carlo simulations are as follows:
 
2014
 
2013
 
2012
Risk free interest rate
0.53%
 
0.32%
 
0.39%
Expected dividend yield of stock
—
 
—
 
—
Expected volatility of stock
18.00%
 
19.60%
 
23.21%
Vesting period
2.8 years
 
2.8 years
 
2.8 years
Compensation cost recognized for share-based compensation arrangements
The amounts of compensation cost recognized for share-based compensation arrangements are presented below:
($ Millions)
2014
 
2013
 
2012
Total equity compensation cost
$
5.8

 
$
4.5

 
$
2.7

Compensation cost capitalized
(1.8
)
 
(1.4
)
 
(0.8
)
Compensation cost recognized in net income
$
4.0

 
$
3.1

 
$
1.9

Income tax benefit recognized in net income
(1.5
)
 
(1.2
)
 
(0.7
)
Compensation cost recognized in net income, net of income tax
$
2.5

 
$
1.9

 
$
1.2