Commitments and Contingencies - Additional Information (Details) $ in Millions	3 Months Ended	12 Months Ended
	Oct. 31, 2023 USD ($)	Oct. 31, 2023 USD ($) project MW
Commitments And Contingencies [Line Items]
Derivative gain, net | $		$ 4.1
Total number of projects | project		3
Recorded unconditional purchase obligation | $	$ 102.2	$ 102.2
Tulare Biomart Project
Commitments And Contingencies [Line Items]
Term for procuring fuel	20 years
LIPA project
Commitments And Contingencies [Line Items]
Term for procuring fuel	7 years
LIPA project | Maximum
Commitments And Contingencies [Line Items]
Term for procuring fuel	18 years
Toyota Project
Commitments And Contingencies [Line Items]
Fuel Supply Contract Term		2 years
Toyota
Commitments And Contingencies [Line Items]
Term for procuring fuel		2 years
Toyota | Maximum
Commitments And Contingencies [Line Items]
Term for procuring fuel		20 years
Derby Project
Commitments And Contingencies [Line Items]
Fuel Supply Contract Term		6 years
Derby Project 14.0 Mega Watt
Commitments And Contingencies [Line Items]
Operating power plant capacity		14.0
Term for procuring fuel		6 years
Derby Project 14.0 Mega Watt | Maximum
Commitments And Contingencies [Line Items]
Term for procuring fuel		20 years
Derby Project 2.8 Mega Watt
Commitments And Contingencies [Line Items]
Operating power plant capacity		2.8
Bridgeport
Commitments And Contingencies [Line Items]
Operating power plant capacity		14.9