v3.26.1
Long-Term Debt And Commercial Paper (Narrative) (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Letters of credit, amount outstanding $ 0.4  
Commercial paper, maximum aggregate amount outstanding permitted 1,900.0  
Commercial paper, amount outstanding $ 635.0 $ 200.0
Commercial Paper    
Debt Instrument [Line Items]    
Weighted-average annual interest rate 4.10% 4.10%
Maximum | Commercial Paper    
Debt Instrument [Line Items]    
Maturity period of debt 397 days  
Weighted Average | Commercial Paper    
Debt Instrument [Line Items]    
Maturity period of debt 1 day 2 days
Revolving Credit Facility Due 2028    
Debt Instrument [Line Items]    
Maximum borrowing capacity under revolving credit facility $ 1,900.0  
Additional borrowing capacity under accordion feature of revolving credit facility 500.0  
Revolving credit facilities letter of credit sublimit 200.0  
Unused capacity 1,900.0  
Remaining borrowing capacity $ 1,600.0  
Revolving Credit Facility Due 2028 | Secured Overnight Financing Rate (SOFR)    
Debt Instrument [Line Items]    
Credit spread adjustment on SOFR borrowings under our revolving credit facility 0.10%  
Revolving Credit Facility Due 2028 | Minimum    
Debt Instrument [Line Items]    
Commitment fee on undrawn amounts (percent) 0.125%  
Revolving Credit Facility Due 2028 | Maximum    
Debt Instrument [Line Items]    
Commitment fee on undrawn amounts (percent) 0.20%  
Line of Credit | Revolving Credit Facility Due 2028 | Minimum | Secured Overnight Financing Rate (SOFR)    
Debt Instrument [Line Items]    
Basis spread on variable interest rates (percent) 1.125%  
Line of Credit | Revolving Credit Facility Due 2028 | Minimum | Base Rate    
Debt Instrument [Line Items]    
Basis spread on variable interest rates (percent) 0.125%  
Line of Credit | Revolving Credit Facility Due 2028 | Maximum | Secured Overnight Financing Rate (SOFR)    
Debt Instrument [Line Items]    
Basis spread on variable interest rates (percent) 1.50%  
Line of Credit | Revolving Credit Facility Due 2028 | Maximum | Base Rate    
Debt Instrument [Line Items]    
Basis spread on variable interest rates (percent) 0.50%  
Recourse | Other Debt    
Debt Instrument [Line Items]    
Finance leases and other debt obligations included in long-term debt $ 364.2 $ 353.9
Recourse | Line of Credit | Revolving Credit Facility Due 2028    
Debt Instrument [Line Items]    
Maturity Date Jul. 18, 2028  
Revolving credit facility, amount outstanding $ 0.0 $ 0.0