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Stock-based Compensation Plans (Tables)
3 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Share-based Payment Arrangement, Activity [Table Text Block]
Number grantedWeighted average grant date fair value per instrumentTotal grant date fair value
(in millions)
Restricted stock units  162,433  $11.26  $1.8  
Employee stock purchase plan instruments  39,492  1.97  0.1  
Phantom Plan awards  188,973  11.26  2.1  
PRSUs: 2020 award  58,040  11.26  0.7  
2019 award  102,203  11.26  1.2  
2018 award  44,451  11.26  0.5  
MRSUs  147,213  14.94  2.2  
$8.6