Annual report pursuant to Section 13 and 15(d)

DEBT - Narrative (Details)

v3.19.3.a.u2
DEBT - Narrative (Details)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
May 12, 2016
USD ($)
Dec. 17, 2012
USD ($)
Jun. 18, 2007
USD ($)
May 31, 2018
USD ($)
Jun. 30, 2019
USD ($)
Sep. 30, 2019
USD ($)
extension
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Nov. 15, 2019
USD ($)
Aug. 31, 2018
USD ($)
Debt Instrument [Line Items]                      
Debt outstanding             $ 3,403,100,000 $ 2,654,900,000      
Long-term debt             3,403,100,000        
Line of credit facility, potential maximum borrowing capacity           $ 1,600,000,000          
Letters of credit outstanding             $ 700,000        
Maximum leverage ratio (not more than)             3.5        
Leverage ratio, maximum allowed increase following a material acquisition             0.5        
Leverage ratio, maximum allowed following a material acquisition             4.0        
Commercial paper notes         $ 1,100,000,000            
Cash paid for interest, net of capitalized interest             $ 105,300,000 88,200,000 $ 96,900,000    
Maximum                      
Debt Instrument [Line Items]                      
Commercial paper, maturity period range         397 days            
Notes, 2.60%, due December 2024                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 750,000,000.0 0   $ 750,000,000.0  
Long term debt, interest rate             2.60%     2.60%  
Debt instrument, term           5 years          
Notes, 3.60%, due Aug 2021                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 300,000,000.0 300,000,000.0      
Long term debt, interest rate       3.60%     3.60%        
Long-term debt       $ 300,000,000.0              
Notes, 3.95%, due May 2023                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 400,000,000.0 400,000,000.0      
Long term debt, interest rate       3.95%     3.95%        
Long-term debt       $ 400,000,000.0              
Notes, Floating Rate, due Aug 2021                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 300,000,000.0 300,000,000.0      
Long-term debt       $ 300,000,000.0              
Revolver                      
Debt Instrument [Line Items]                      
Debt outstanding             0 0      
Long-term line of credit, borrowings outstanding             0        
Credit facility, available for borrowings             1,100,000,000        
Commercial Paper                      
Debt Instrument [Line Items]                      
Debt outstanding             0 0      
Receivables Securitization Facility                      
Debt Instrument [Line Items]                      
Debt outstanding             0        
Credit facility, borrowing capacity             225,000,000.0        
Debt collateral             221,700,000        
Notes, 2.30%, due June 2021                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 500,000,000.0 500,000,000.0      
Long term debt, interest rate             2.30%        
Notes, 2.30%, due June 2021 | Senior Notes                      
Debt Instrument [Line Items]                      
Long term debt, interest rate 2.30%                    
Debt instrument, term 5 years                    
Long-term debt $ 500,000,000.0                    
Notes, 3.25%, due June 2026                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 275,000,000.0 275,000,000.0      
Long term debt, interest rate             3.25%        
Notes, 3.25%, due June 2026 | Senior Notes                      
Debt Instrument [Line Items]                      
Long term debt, interest rate 3.25%                    
Debt instrument, term 10 years                    
Long-term debt $ 275,000,000.0                    
Notes, 7.00%, due July 2037                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 250,000,000.0 250,000,000.0      
Long term debt, interest rate             7.00%        
Notes, 7.00%, due July 2037 | Senior Notes                      
Debt Instrument [Line Items]                      
Long term debt, interest rate     7.00%                
Debt instrument, term     30 years                
Long-term debt     $ 250,000,000.0                
Notes, 3.30%, due Dec 2022                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 500,000,000.0 500,000,000.0      
Long term debt, interest rate             3.30%        
Notes, 3.30%, due Dec 2022 | Senior Notes                      
Debt Instrument [Line Items]                      
Long term debt, interest rate   3.30%                  
Debt instrument, term   10 years                  
Long-term debt   $ 500,000,000.0                  
Debentures, 6.90%, due July 2028                      
Debt Instrument [Line Items]                      
Debt outstanding             $ 125,000,000.0 $ 125,000,000.0      
Long term debt, interest rate             6.90%        
Long-term debt             $ 125,000,000.0        
London Interbank Offered Rate (LIBOR) | Notes, Floating Rate, due Aug 2021                      
Debt Instrument [Line Items]                      
Debt instrument, basis spread on variable rate       0.87%              
Term Loan                      
Debt Instrument [Line Items]                      
Debt instrument, term           3 years          
Credit facility, borrowing capacity           $ 800,000,000.0          
Revolver                      
Debt Instrument [Line Items]                      
Debt instrument, term           5 years          
Credit facility, borrowing capacity           $ 1,100,000,000         $ 900,000,000
Maximum number of extensions, maturity date | extension           2          
Credit facility, maturity date, extension period           1 year          
Commercial Paper                      
Debt Instrument [Line Items]                      
Long-term line of credit, borrowings outstanding           $ 0