Service Revenue (Summary of Deferred Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction) (Details) $ in Millions	Nov. 30, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue related to material rights	$ 55.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue, timing of satisfaction	6 months
Deferred revenue related to material rights	$ 13.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-06-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue, timing of satisfaction	1 year
Deferred revenue related to material rights	$ 20.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-06-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue, timing of satisfaction
Deferred revenue related to material rights	$ 21.5