v3.26.1
DEBT - Schedule of Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Debt Instrument [Line Items]      
Total short-term debt $ 0.0 $ 0.0 $ 550.0
Total long-term debt - face value 4,440.1 4,440.6 4,440.7
Unamortized discounts and debt issuance costs (75.8) (78.5) (81.0)
Total long-term debt - book value 4,364.3 4,362.1 4,359.7
Current maturities (400.0) (0.4) (0.5)
Total long-term debt - reported value 3,964.3 4,361.7 4,359.2
Estimated fair value of long-term debt 3,878.4 4,333.3 4,280.8
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 0.0
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
Interest rate (as percent) 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
Interest rate (as percent) 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
Interest rate (as percent) 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
Commercial Paper      
Debt Instrument [Line Items]      
Total short-term debt $ 0.0 $ 0.0 $ 550.0