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Stock and Other Compensation Plans (Table)
 12 Months Ended
Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The following summarizes information regarding the restricted stock units granted under the plan during the fiscal years ended September 30, 2018, 2017 and 2016:
 
2018
 
2017
 
2016
 
Number of
Restricted
Units
 
Weighted
Average
Grant-Date
Fair
Value
 
Number of
Restricted
Units
 
Weighted
Average
Grant-Date
Fair
Value
 
Number of
Restricted
Units
 
Weighted
Average
Grant-Date
Fair
Value
Nonvested at beginning of year
570,814

 
$
69.45

 
782,431

 
$
57.66

 
878,104

 
$
48.24

Granted
248,710

 
85.62

 
273,497

 
74.15

 
357,323

 
65.98

Vested
(274,392
)
 
64.43

 
(448,326
)
 
52.23

 
(448,136
)
 
45.88

Forfeited
(6,540
)
 
74.87

 
(36,788
)
 
63.48

 
(4,860
)
 
53.52

Nonvested at end of year
538,592

 
$
80.91

 
570,814

 
$
69.45

 
782,431

 
$
57.66