v3.26.3
11. Commitments and Contingencies (Details) - Commercial Commitments - USD ($)
$ in Millions
Sep. 30, 2026
Feb. 28, 2026
Revolving Credit Facility    
Debt Instrument [Line Items]    
Letters of Credit, Issued and Outstanding $ 0.0  
Letters of Credit, Available Capacity 150.0  
Line of Credit Facility, Letter of Credit Sub-Limit 150.0 $ 450.0
Bilateral facilities [Member]    
Debt Instrument [Line Items]    
Letters of Credit, Issued and Outstanding 153.0  
Letters of Credit, Available Capacity 235.8  
Letters of Credit Outstanding, Secured by Cash 1.2  
Surety bonds    
Debt Instrument [Line Items]    
Surety Bonds, Issued and Outstanding 140.8  
Surety Bonds, Available Capacity $ 144.3