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Debt - Schedule of Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
May 10, 2024
Aug. 14, 2023
Debt [Abstract]        
Short-term borrowings $ 0.7 $ 1.7    
Long-term debt:        
Finance leases and other long-term debt 13.4 14.1    
Swap valuation adjustments 22.5 (0.3)    
Unamortized debt issuance costs (42.9) (47.0)    
Total long-term debt, net, including current maturities 4,782.7 4,755.8    
Current maturities of long-term debt 1.3 1.4    
Total long-term debt, net 4,781.4 4,754.4    
Unamortized discounts $ 10.3 $ 11.0    
5.197% Senior Notes Due 2027 | Senior Notes        
Long-term debt:        
Stated interest rate of debt instrument (as percent) 5.197% 5.197% 5.197%  
Long-term debt $ 699.9 $ 699.9    
5.40% Senior Notes due 2028 | Senior Notes        
Long-term debt:        
Stated interest rate of debt instrument (as percent) 5.40% 5.40%   5.40%
Long-term debt $ 498.8 $ 498.6    
5.176% Senior Notes Due 2029 | Senior Notes        
Long-term debt:        
Stated interest rate of debt instrument (as percent) 5.176% 5.176% 5.176%  
Long-term debt $ 750.0 $ 750.0    
5.314% Senior Notes Due 2031 | Senior Notes        
Long-term debt:        
Stated interest rate of debt instrument (as percent) 5.314% 5.314% 5.314%  
Long-term debt $ 500.0 $ 500.0    
5.70% Senior Notes due 2033 | Senior Notes        
Long-term debt:        
Stated interest rate of debt instrument (as percent) 5.70% 5.70%   5.70%
Long-term debt $ 993.8 $ 993.4    
5.450% Senior Notes Due 2034 | Senior Notes        
Long-term debt:        
Stated interest rate of debt instrument (as percent) 5.45% 5.45% 5.45%  
Long-term debt $ 749.6 $ 749.5    
5.700% Senior Notes Due 2054 | Senior Notes        
Long-term debt:        
Stated interest rate of debt instrument (as percent) 5.70% 5.70% 5.70%  
Long-term debt $ 597.6 $ 597.6