Business Segment Information - Schedule of Long-Lived Assets by Geographical Areas (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 8,308,377	$ 7,963,851	$ 7,865,832

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.

No definition available.

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Period Type:	duration