XML 72 R59.htm IDEA: XBRL DOCUMENT v3.25.1
Financial Instruments and Other Guarantees - Narratives (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 18, 2024
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Feb. 13, 2023
Guarantee Obligations [Line Items]          
Interest expense, net of capitalized interest   $ 11.5 $ 14.7    
Restricted Cash   687.3   $ 682.2  
Cash-backed bank guarantee facilities   170.2      
Capitalized debt issuance costs related to ARS amendment   1.7      
Letter of Credit          
Guarantee Obligations [Line Items]          
Letters of credit outstanding, amount   49.3      
Line of Credit Facility, Commitment Fee Percentage 0.50%        
Line of credit facility, maximum borrowing capacity   $ 250.0      
Cash Collateral, Percentage of the aggregate amount of letters of credit outstanding   103.00%      
Stated interest rate   0.75%      
Collateralized Letter of Credit Agreement          
Guarantee Obligations [Line Items]          
Letters of credit outstanding, amount   $ 115.6      
Cash-collateralized Letters of Credit   119.1      
Surety Trust Account          
Guarantee Obligations [Line Items]          
Restricted Cash   398.0   $ 394.6  
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]          
Letters of credit outstanding, amount   $ 60.4      
Basis spread on variable rate   2.10%      
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%        
Transaction support agreements, additional collateral demands   $ 5.0      
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   499.0      
Collateral amount held in trust account   398.0      
Collateral amount held in letters of credit   $ 127.0      
Surety Bond | Maximum          
Guarantee Obligations [Line Items]          
Net Leverage Ratio   1.5      
Debt Instrument, Collateral   525.0 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   119.8      
Interest expense, net of capitalized interest   $ 0.6 $ 0.8