Quarterly report pursuant to Section 13 or 15(d)

DEBT - Narrative (Details)

v3.21.2
DEBT - Narrative (Details)
1 Months Ended 6 Months Ended
Apr. 22, 2020
USD ($)
Sep. 30, 2018
USD ($)
extension
Jun. 30, 2021
USD ($)
Jun. 30, 2019
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]          
Aggregate principal amount of debt issued     $ 3,901,300,000   $ 4,402,200,000
Line of credit facility, potential maximum borrowing capacity   $ 1,600,000,000      
Letters of credit outstanding, amount     700,000    
Commercial paper notes     $ 1,100,000,000    
Maximum          
Debt Instrument [Line Items]          
Debt instrument, term     1 year    
Commercial paper, maturity period range       397 days  
Revolving Credit Facility          
Debt Instrument [Line Items]          
Debt instrument, term   5 years      
Repayments of revolving credit facility $ 225,000,000.0        
Credit facility borrowing capacity   $ 1,100,000,000      
Line of credit, maximum number of extensions | extension   2      
Line of credit facility, expiration date, extension period   1 year      
Outstanding borrowings     $ 0    
Line of credit facility, available for borrowing     1,100,000,000    
Commercial paper          
Debt Instrument [Line Items]          
Outstanding borrowings     $ 0    
Notes, 2.6%, due December 2025          
Debt Instrument [Line Items]          
Debt instrument, interest rate (as a percent) 2.60%   2.60%    
Aggregate principal amount of debt issued $ 400,000,000.0   $ 400,000,000.0   400,000,000.0
Debt instrument, term 5 years        
Notes, 3.1%, due May 2030          
Debt Instrument [Line Items]          
Debt instrument, interest rate (as a percent) 3.10%   3.10%    
Aggregate principal amount of debt issued $ 600,000,000.0   $ 600,000,000.0   $ 600,000,000.0
Debt instrument, term 10 years        
Commercial paper          
Debt Instrument [Line Items]          
Long-term debt     $ 0