XML 120 R72.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Long-Term Debt (Revolving Credit Agreement) (Details) - Two Thousand Eighteen Revolver [Member]
$ in Millions
Jul. 27, 2023
Jul. 27, 2018
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]        
Long-term Line of Credit       $ 700
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Line of Credit Facility, Initiation Date   Jul. 27, 2018    
Line of Credit Facility, Current Borrowing Capacity   $ 1,500    
Additional borrowing capacity   $ 750    
Leverage ratio (not more than)   5.50    
Standby letters     $ 8  
Unused borrowing capacity     1,330  
Debt Instrument, Covenant, Interest Coverage Ratio   2.25    
Long-term Line of Credit     $ 162  
Weighted Average Interest Rate, Amount Outstanding, 2018 Revolver     3.75%  
Revolving Credit Facility [Member] | Incremental Addition To Federal Funds Rate [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.50%    
Revolving Credit Facility [Member] | Incremental Addition To One Month L I B O R [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   1.00%    
Revolving Credit Facility [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Commitment fee on unused capacity   0.25%    
Business acquisition, total purchase price   $ 50    
Revolving Credit Facility [Member] | Minimum [Member] | Applicable Margin On L I B O R Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   1.25%    
Revolving Credit Facility [Member] | Minimum [Member] | Applicable Margin On Base Rate Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.25%    
Revolving Credit Facility [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Commitment fee on unused capacity   0.35%    
Leverage ratio (not more than)   6.00    
Revolving Credit Facility [Member] | Maximum [Member] | Applicable Margin On L I B O R Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   2.25%    
Revolving Credit Facility [Member] | Maximum [Member] | Applicable Margin On Base Rate Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   1.25%    
External Credit Rating, Investment Grade [Member] | Revolving Credit Facility [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.125%    
External Credit Rating, Investment Grade [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Applicable Margin On L I B O R Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   1.125%    
External Credit Rating, Investment Grade [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Applicable Margin On Base Rate Loan [Member]        
Debt Instrument [Line Items]        
Commitment fee on unused capacity   0.125%    
External Credit Rating, Investment Grade [Member] | Revolving Credit Facility [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.75%    
Commitment fee on unused capacity   0.35%    
External Credit Rating, Investment Grade [Member] | Revolving Credit Facility [Member] | Maximum [Member] | Applicable Margin On L I B O R Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate   1.75%    
Subsequent Event [Member] | Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Maturity Date Jul. 27, 2023