Intangible Assets, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Intangible Assets, Net
Amortization expense	$ 3.6	$ 2.9	$ 7.0	$ 5.2
Capitalized software amortization expense	$ 2.3	$ 1.3	$ 4.1	$ 2.6

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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+ Details