Revenue from Contracts with Customers - Performance Obligation (Details) - USD ($) $ in Millions	Mar. 31, 2026	Sep. 30, 2025
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 717.7	$ 655.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of performance obligation to be recognized	50.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	14 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of performance obligation to be recognized	50.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period