Acquisitions - R.J. O'Brien - Schedule of Operating Revenue and Net Income (Details) - R.J. O’Brien - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 30, 2026	Jun. 30, 2026
Business Combination [Line Items]
Operating revenue	$ 187.7	$ 602.3
Net income	$ 10.0	$ 49.2

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.

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+ Details