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Stock-based Compensation Plans (Tables)

6 Months Ended

Mar. 31, 2025

Share-Based Payment Arrangement, Noncash Expense [Abstract]

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

Grants issued during the six months ended March 31, 2025 are as follows:

			Number granted						Weighted average grant date fair value per instrument						Total grant date fair value (in millions)
Quarter ended December 31, 2024
MRSUs			64,044						$	38.25					$	2.4
PRSUs			64,044						25.58						1.6
Restricted stock units			87,344						25.58						2.2
Phantom Plan instruments			134,382						25.58						3.4
Non-qualified stock options			207,417						7.90						1.6
Employee stock purchase plan instruments			24,621						$	3.86					0.1
Total - Quarter ended December 31, 2024															$	11.3
Quarter ended March 31, 2025
MRSUs			7,692						$	41.24					$	0.3
PRSUs			7,692						25.19						0.2
Restricted stock units			84,355						26.60						2.2
Non-qualified stock options			21,198						9.14						0.2
Employee stock purchase plan instruments			24,802						$	4.53					0.1
Total - Quarter ended March 31, 2025															3.0
Total - Year-to-date ended March 31, 2025															$	14.3

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The assumptions used to determine the grant date fair value are indicated below for awards granted to date during the current fiscal year.

						December 3, 2024						March 3, 2025
Variables used in determining grant date fair value:
Dividend yield						1.10%						1.10%
Risk-free rate						4.10%						3.90%
Expected term (in years)						2.80						2.60

The assumptions used to determine the grant date fair value are indicated below for awards granted to date during the current fiscal year.

						December 3, 2024						March 3, 2025
Variables used in determining grant date fair value:
Dividend yield						1.64%						1.41%
Risk-free rate						4.14%						4.02%
Expected term (in years)						6.00						6.00

X

- Definition

Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-SubTopic 10
-Topic 718
-Publisher FASB
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

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-Subparagraph (f)(2)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
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