v3.26.1
Financial Information by Segment - Additional Information (Detail)
 9 Months Ended
Jun. 30, 2026
Segment
Segment Reporting Information [Line Items]  
Number of business reportable segments 2
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] srt:ChiefExecutiveOfficerMember, srt:PresidentMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description The CODM reviews Segment earnings before interest and taxes (“Segment EBIT”) at the operating segment level to allocate resources and to assess operating results and financial performance. The CODM reviews the change in the actual results compared to the same period forecast, the same period year-ago, and the preceding period on a quarterly basis.