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DEBT - Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Jun. 30, 2023
Mar. 31, 2023
Debt Instrument [Line Items]        
Total short-term debt $ 95.0 $ 0.0 $ 0.0  
Total long-term debt - face value 3,391.1 3,941.5 3,941.6  
Unamortized discounts and debt issuance costs (58.9) (63.4) (65.9)  
Fair value adjustments 0.0 (0.3) (2.0)  
Total long-term debt - book value 3,332.2 3,877.8 3,873.7  
Less current maturities (0.5) (0.5) (0.5)  
Total long-term debt - reported value 3,331.7 3,877.3 3,873.2  
Estimated fair value of long-term debt 3,158.6 3,798.0 3,715.0  
Commercial Paper        
Debt Instrument [Line Items]        
Total short-term debt 95.0 0.0 0.0  
Notes | 4.50% notes due 2025 3        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 400.0 400.0 400.0  
Interest rate 4.50%      
Effective interest rate 4.65%      
Notes | 5.80% notes due 2026        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 0.0 550.0 550.0 $ 550.0
Interest rate 5.80%     5.80%
Notes | 3.90% notes due 2027        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 400.0 400.0 400.0  
Interest rate 3.90%      
Effective interest rate 4.00%      
Notes | 3.50% notes due 2030        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 750.0 750.0 750.0  
Interest rate 3.50%      
Effective interest rate 3.94%      
Notes | 7.15% notes due 2037        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 129.2 129.2 129.2  
Interest rate 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 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 4.70%      
Effective interest rate 5.42%      
Other notes        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 1.0 1.4 1.5  
Effective interest rate 0.42%      
Line Of Credit | Bank line of credit expires 2027        
Debt Instrument [Line Items]        
Total short-term debt $ 0.0 0.0 0.0  
Line Of Credit | Bank line of credit expires 2027        
Debt Instrument [Line Items]        
Total long-term debt - face value $ 0.0 $ 0.0 $ 0.0