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Stock-Based Compensation - Share-based Payment Arrangement, Activity (Details) - $ / shares	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Restricted stock/units
Number Granted
Equity instruments other than options (in shares)	1,838,525	1,720,662
Weighted Average Grant Date Fair Value
Equity instruments other than options (in dollars per share)	$ 53.69	$ 66.59
Performance shares
Number Granted
Equity instruments other than options (in shares)	370,307	339,191
Weighted Average Grant Date Fair Value
Equity instruments other than options (in dollars per share)	$ 54.13	$ 79.54
Stock options
Number Granted
Equity instruments other than options (in shares)	652,702	570,140
Weighted Average Grant Date Fair Value
Equity instruments other than options (in dollars per share)	$ 13.74	$ 18.21

X

- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Options And Equity Instruments Other Than Options, Grants In Period, Net Of Forfeitures

+ References

No definition available.

+ Details

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X

- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Options And Instruments Other Than Options, Weighted Average Grant Date Fair Value

+ References

No definition available.

+ Details

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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