v3.26.1
Financial Instruments and Other Guarantees - Narratives (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Jan. 18, 2024
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Nov. 03, 2025
Feb. 13, 2023
Guarantee Obligations [Line Items]            
Interest expense, net of capitalized interest   $ 10.7 $ 11.5      
Restricted Cash   675.9   $ 709.2    
Cash-backed bank guarantee facilities   218.5        
Capitalized debt issuance costs related to ARS amendment       1.8    
Letter of Credit            
Guarantee Obligations [Line Items]            
Line of Credit Facility, Commitment Fee Percentage 0.50%          
Line of credit facility, maximum borrowing capacity   $ 250.0        
Stated interest rate   0.75%        
Letters of credit outstanding, amount   $ 49.2        
Collateralized Letter of Credit Agreement            
Guarantee Obligations [Line Items]            
Letters of credit outstanding, amount   78.1        
Letter of credit amendment            
Guarantee Obligations [Line Items]            
Cash Collateral, Percentage of the aggregate amount of letters of credit outstanding         102.00%  
Cash Collateral, minimum         103.00%  
Surety Trust Account            
Guarantee Obligations [Line Items]            
Restricted Cash   $ 377.7   $ 383.6    
Accounts Receivable Securitization Program            
Guarantee Obligations [Line Items]            
Line of credit facility, maximum borrowing capacity           $ 225.0
Accounts Receivable Securitization Program | Secured debt            
Guarantee Obligations [Line Items]            
Basis spread on variable rate   2.10%        
Letters of credit outstanding, amount   $ 66.0        
Maximum            
Guarantee Obligations [Line Items]            
Basis spread on variable rate 3.25%          
Maximum | Letter of Credit            
Guarantee Obligations [Line Items]            
Basis spread on variable rate 4.25%          
Minimum            
Guarantee Obligations [Line Items]            
Basis spread on variable rate 2.50%          
Minimum | Letter of Credit            
Guarantee Obligations [Line Items]            
Basis spread on variable rate 3.50%          
Surety Bond            
Guarantee Obligations [Line Items]            
Surety Agreement Liquidity Covenant, Amount   400.0        
Difference between penal sum of all surety bonds and amount of collateral posted in favor of surety providers   479.0        
Collateral amount held in trust account   377.7        
Collateral amount held in letters of credit   $ 126.4        
Surety Bond | Maximum            
Guarantee Obligations [Line Items]            
Net Leverage Ratio   1.5        
Debt Instrument, Collateral   504.1 million        
Surety Bond | Minimum            
Guarantee Obligations [Line Items]            
Net Leverage Ratio   1.0        
Senior Notes | 3.250% Convertible Senior Notes due March 2028 (2028 Convertible Notes)            
Guarantee Obligations [Line Items]            
Debt Instrument, Funded, Percent   50.00%        
Stated interest rate   3.25%        
Secured debt | Accounts Receivable Securitization Program            
Guarantee Obligations [Line Items]            
Outstanding borrowings   $ 0.0        
Accounts Receivable from Securitization   104.9        
Interest expense, net of capitalized interest   $ 0.6 $ 0.6