Stock-based Compensation Plans (Tables)

6 Months Ended

Mar. 31, 2020

Share-based Payment Arrangement, Noncash Expense [Abstract]

Share-based Payment Arrangement, Activity [Table Text Block]

	Number granted	Weighted average grant date fair value per instrument		Total grant date fair value (in millions)
Quarter ended December 31, 2019
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	65,428	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
Quarter ended March 31, 2020
Restricted stock units	118,684	12.14		1.4
Employee stock purchase plan instruments	53,876	2.09		0.1
PRSUs: 2020 award	13,682	12.09		0.2
MRSUs	10,261	17.79		0.2
				$	10.5

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity

The table below provides information regarding MRSU awards, which were valued using Monte Carlo simulations on the dates the units were granted.

	December 3, 2019			January 28, 2020			February 24, 2020
Fair Value at grant date	$	14.94		$	16.76		$	18.17
Units granted	147,213			2,763			7,498
Variables used in determining grant date fair value:
Dividend yield	1.87		%	1.76		%	1.73		%
Risk-free rate	1.53		%	1.44		%	1.23		%
Expected term (in years)	2.83			2.67			2.60