Shareholders' Equity - Schedule of Forward Sales Agreement (Details) $ / shares in Units, $ in Thousands	6 Months Ended
Mar. 31, 2024 USD ($) $ / shares shares
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares available (in shares) \| shares	7,734,366
Net proceeds available \| $	$ 889,680
Forward price (USD per share) \| $ / shares	$ 115.03
Forward Sales Equity Agreement Maturing Quarter Ended September 30 2024
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares available (in shares) \| shares	861,655
Net proceeds available \| $	$ 101,838
Forward price (USD per share) \| $ / shares	$ 118.19
Forward Sales Equity Agreement Maturing Quarter Ended December 31, 2024
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares available (in shares) \| shares	2,176,974
Net proceeds available \| $	$ 251,971
Forward price (USD per share) \| $ / shares	$ 115.74
Forward Sales Equity Agreement Maturing Quarter Ended June 30, 2025
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares available (in shares) \| shares	4,695,737
Net proceeds available \| $	$ 535,871
Forward price (USD per share) \| $ / shares	$ 114.12

The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(1)
-SubTopic 10
-Topic 480
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481648/480-10-50-2

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount that would be paid upon settlement of forward contract indexed to equity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (d)
-SubTopic 40
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

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- Definition

Number of shares as a settlement alternative for each freestanding forward contract.

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