v3.25.2
DEBT - Schedule of Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Nov. 30, 2024
Jun. 30, 2024
Debt Instrument [Line Items]        
Total short-term debt $ 550.0 $ 0.0   $ 95.0
Total long-term debt - face value 4,440.7 5,391.1   3,391.1
Unamortized discounts and debt issuance costs (81.0) (83.7)   (58.9)
Total long-term debt - book value 4,359.7 5,307.4   3,332.2
Current maturities (0.5) (400.5)   (0.5)
Total long-term debt - reported value 4,359.2 4,906.9   3,331.7
Estimated fair value of long-term debt 4,280.8 4,762.6   3,158.6
Notes | 4.50% notes due 2025        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 0.0 400.0   400.0
Interest rate (as percent) 4.50%      
Notes | 3.90% notes due 2027        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 400.0 400.0   400.0
Interest rate (as percent) 3.90%      
Effective interest rate 4.00%      
Notes | 4.95% notes due 2029        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 500.0 500.0 $ 500.0 0.0
Interest rate (as percent) 4.95%   4.95%  
Effective interest rate 5.17%      
Notes | 3.50% notes due 2030        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 750.0 750.0   750.0
Interest rate (as percent) 3.50%      
Effective interest rate 3.94%      
Notes | 5.35% Notes Due2034        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 750.0 750.0 $ 750.0 0.0
Interest rate (as percent) 5.35%   5.35%  
Effective interest rate 5.48%      
Notes | 7.15% notes due 2037        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 129.2 129.2   129.2
Interest rate (as percent) 7.15%      
Effective interest rate 8.05%      
Notes | 4.50% notes due 2047        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 700.0 700.0   700.0
Interest rate (as percent) 4.50%      
Effective interest rate 4.59%      
Notes | 4.70% notes due 2048        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 460.9 460.9   460.9
Interest rate (as percent) 4.70%      
Effective interest rate 5.42%      
Notes | 5.70% Notes Due 2054        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 750.0 750.0 $ 750.0 0.0
Interest rate (as percent) 5.70%   5.70%  
Effective interest rate 5.82%      
Other notes        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 0.6 1.0   1.0
Commercial Paper        
Debt Instrument [Line Items]        
Total long-term debt - face value 0.0 550.0   550.0
Commercial Paper        
Debt Instrument [Line Items]        
Total short-term debt $ 550.0 0.0   95.0
Effective interest rate 4.66%      
Line of Credit | Bank line of credit expires 2029        
Debt Instrument [Line Items]        
Total short-term debt $ 0.0 0.0   0.0
Line of Credit | Bank line of credit expires 2029        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 0.0 $ 0.0   $ 0.0