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DEBT Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2019
Jun. 30, 2019
Sep. 30, 2019
Mar. 31, 2019
Debt Instrument [Line Items]        
Proceeds from issuance of debt   $ 200    
Debt instrument, interest rate, stated percentage   3.55%    
Debt instrument, maturity date   Jun. 15, 2029    
Debt and capital lease obligations     $ 10,400  
Debt fair value     11,400  
Commercial Paper        
Debt Instrument [Line Items]        
Line of credit facility, maximum borrowing capacity   $ 1,000   $ 750
Line of credit, current     $ 245  
Debt, weighted average interest rate     2.29%  
Subsequent Event [Member]        
Debt Instrument [Line Items]        
Proceeds from issuance of debt $ 127      
Debt instrument, maturity date Jan. 01, 2024      
Subsequent Event [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated percentage 1.90%      
Subsequent Event [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated percentage 2.10%