v3.26.1
DEBT - Schedule of Debt (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Nov. 30, 2024
Debt Instrument [Line Items]        
Total short-term debt $ 197.0 $ 0.0 $ 0.0  
Total long-term debt - face value 4,440.1 4,440.6 4,990.7  
Unamortized discounts and debt issuance costs (77.1) (78.5) (82.3)  
Total long-term debt - book value 4,363.0 4,362.1 4,908.4  
Current maturities (0.0) (0.4) (0.5)  
Total long-term debt - reported value 4,363.0 4,361.7 4,907.9  
Estimated fair value of long-term debt 4,243.0 4,333.3 4,794.5  
Bank line of credit expires 2029 | Line of Credit        
Debt Instrument [Line Items]        
Total short-term debt 0.0 0.0 0.0  
Commercial Paper        
Debt Instrument [Line Items]        
Total long-term debt - face value 0.0 0.0 550.0  
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 Rates 4.00%      
Notes | 4.95% notes due 2029        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 500.0 500.0 500.0 $ 500.0
Interest rate (as percent) 4.95%     4.95%
Effective Interest Rates 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 Rates 3.94%      
Notes | 5.35% notes due 2034        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 750.0 750.0 750.0 $ 750.0
Interest rate (as percent) 5.35%     5.35%
Effective Interest Rates 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 Rates 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 Rates 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 Rates 5.42%      
Notes | 5.70% notes due 2054        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 750.0 750.0 750.0 $ 750.0
Interest rate (as percent) 5.70%     5.70%
Effective Interest Rates 5.82%      
Other notes        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 0.0 $ 0.5 $ 0.6