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v3.26.1

Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Oct. 31, 2023 | Apr. 30, 2026 | Oct. 31, 2025
Revenue Recognition |  |  |
Contract asset |  | $ 153.5 | $ 131.1
Contract asset, long-term |  | 109.9 | 82.1
Contract liability |  | 14.7 | 8.7
Toyota Investment Tax Credit Sale |  |  |
Revenue Recognition |  |  |
Consideration payable | $ 6.3 | 6.0 | 6.0
Consideration payable, long term | 6.0 | 5.1 | $ 4.5
Sale of investment tax credit | $ 6.3 |  |
Hydrogen production and power purchase agreement | 20 years |  |
Generation |  |  |
Revenue Recognition |  |  |
Remaining performance obligations |  | $ 370.3 |
Generation | Minimum |  |  |
Revenue Recognition |  |  |
Revenue performance obligation expected timing of satisfaction |  | 19 years |
Generation | Maximum |  |  |
Revenue Recognition |  |  |
Revenue performance obligation expected timing of satisfaction |  | 20 years |
Advanced Technologies |  |  |
Revenue Recognition |  |  |
Remaining performance obligations |  | $ 4.9 |
Advanced Technologies | Maximum |  |  |
Revenue Recognition |  |  |
Revenue performance obligation expected timing of satisfaction |  | 2 years |
Product |  |  |
Revenue Recognition |  |  |
Remaining performance obligations |  | $ 36.1 |
Product | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-11-01 |  |  |
Revenue Recognition |  |  |
Revenue performance obligation expected timing of satisfaction |  | 2 years |
Service Agreements | Service |  |  |
Revenue Recognition |  |  |
Remaining performance obligations |  | $ 155.4 |
Service Agreements | Service | Minimum |  |  |
Revenue Recognition |  |  |
Revenue performance obligation expected timing of satisfaction |  | 3 years |
Service Agreements | Service | Maximum |  |  |
Revenue Recognition |  |  |
Revenue performance obligation expected timing of satisfaction |  | 15 years |

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